The single orthodox male thrives off of free food. The community wants to give him food. The question is how to find it. Where do you place yourself, so you can receive optimal amounts of free food, to get you through the week without cooking. To note, the correct phraseology for receiving free food is 'score.' You score free food.
We aren't worried about the single woman, as she knows how to cook. She just hasn't found somebody good looking enough to cook for yet. The single man needs food, and his survival is dependant on leftovers. Freshly cooked food is for married people.
Some single men don't have the innate skill set to navigate other people's food. As I have mastered the art of taking food from others, here are some of the techniques and skills I have developed for survival and enjoyment as a single man.

Leftovers
Take them. Take them with pride. Married people will give them to you. If they find out you're single, they will search you out with tin pans of whatever they can find. You could be eating at a restaurant, if they find out you're single, they starting collections from the other tables and packing them for you.
Feeding single people leftovers is communal. No matter how old you are, they assume that you can't cook. They're right. No single man would eat with married people if they knew how to cook. If there is no chance of meeting a girl, the single man is there for the food. You don't even have to ask, they will bag it for you. Take whatever they give you. Take whatever you can.

Be Classy
You already have a rep for being single. You don't to add 'no class' to that. Pretend like you don't need it. But take it. As you're carrying the tins out of the party, keep it classy.
Smile and say, 'I don't need it, but thank you.' Be sure you're walking away as you say that, as they may insist that you give the food back. You don't want them to be in a position where they can grab it.

Go Into Your Friend's Fridge
After dinner, peruse through the upper shelves of the fridge. Never waste your time on the lower shelves. You don't need vegetables.
When they ask what you're doing in their kitchen, tell them how nice it looks. Then, tell them how good the food looks. They should get the hint. If they don't, give them a blank stare with a little blush. Remember, you want to keep it classy. They will give you the food from their fridge.
The subtle charity technique always works best when they want you out of their house. If you're intrusive enough, they'll empty the fridge and the pantry to ensure that you have enough food to not come back for months.

Take Whatever They Give You - You Will Eat It
​They're throwing it out. Take it. Two weeks old? Take it. Married people can't handle two week old fish. You can. Use that to your advantage. They've become domesticated and are used to eating food that's been cooked in an oven. Some of them have never used a microwave. They wait for their food.
Somebody is cooking fresh stuff nightly over in the married person's home. They can't handle the stuff from last week. Your stomach can. It has eaten your microwaved eggs for the past thirty years.​

Show Up to Shul Events
If there is one thing the sisterhood loves to do, it's feed single people. They don't want single people in their homes, as single people are creepy, and they might be on the Family Watchdog list. Nonetheless, they want to feed the single-capable. Take what you can. Take all the tin pans they give you. Enjoy it. That food is fresh.
It would be offensive to give leftovers from a community event to married people. As a single person, you walk out of that fundraiser with a smile and hands stacked in tin. Remember, part of the fundraiser is giving the single man food.

Show Up to Family Events
Your family will give you everything. You tried hosting them and they know how bad your food is.
There's not enough room in the freezer for the cake. Take it. That's breakfast for the next month. At least you'll remember Shlomi's birthday, when you see his name on your food.

Chanukah Parties
Take as much oily food as you can. If the hosts aren't looking, take the bottle of oil. Preferably the liter and a half size.
The oil may get to your stomach the first couple of days. After the first few days, the latkes, sufganiot and whatever sfingee thing you eat will go right through you. 

Holidays
Show up. They will give you the leftovers. You can never have too much leftover brisket.
You don't have to be invited. Take advantage of the Jewish 'Hachnasat Orchim' concept. If you look needy enough, they'll even invite you for Pesach. Can you imagine not having to Kasher you kitchen for Pesach. Taking home Seder food is a double win.

Simchas
Go to the wedding. When you walk out, say 'Mazel Tov' to the bride and groom, and take the souffles off the tables. People usually leave those.

Crockpot Cooking
If you can't find any food that you didn't pay for, use the crockpot. You'll mess up the white chicken otherwise. The great thing about the crockpot cooking technique is that whatever you make will taste like leftovers.

Scavenge
Do what you must. I don't suggest going through the garbage. That will hurt any chance you have of ever meeting somebody.
Scavenging could be showing up to multiple homes on a Friday night. Jewish scavenging experts have the ability to find the food that was served for Friday night dinner, in the kitchen. Their ability to turn the dishes, that have been brought back into the kitchen, as buffet, shows their

Hotel Breakfast in Israel
Any proud single person will stack up five to eight plates at the table. It's still classy. The plates are china. 
The question is how to get that food home. After you've eaten, it is then time to use the napkin to swaddle the food; it is your baby, and until it is in the fridge, it must be watched over. After the food has been swaddled, you then bag it.
Note of Importance: It's best to be invited to the hotel breakfast by somebody else. Remember, you don't want to have to pay for your leftovers.

Bagging 
The bagging technique is really the key to single survival. If you don't have a bag, preferably luggage, it's impossible to take the amount that you need from your friend's house, to satisfy your weekly nourishment needs. The hotel's buffet is huge, because they know the single people have suitcases with them.

Aluminum Foil
To quote Yomi Groner, 'Don't forget aluminum foil. It keeps the food good for another day or two.' Many have overlooked aluminum foil since shrink wrap and Ziplocs became popular. Nonetheless, nothing hugs the leftovers as well as foil.

Purchase a Microwave
You need to heat up the food they gave you somehow. Stay away from ovens. You're not cooking for a family of nine. And the single man doesn't need to cook. They need to reheat. 
Warning: When using the microwave technique of reheating for the single man, separate the food from the aluminum foil. 

The survival of the single male is dependent on their ability to eat after the meal is finished. It's not what you eat at the buffet. It's not what you eat at your friend's home. It's how many dinners you took back from your friend's place. In my case, since I have mastered the technique of loading bags, it's dinners for the next month. That saves me having to eat at other people's homes again.
Personally, I feel bad for the single women. They're stuck with people respecting them, thinking they know how to cook.

​Never try to look good. Keep it classy, but never try to look good. Bring your bag and load it up. Stack the tin pans. Scavenge their fridge. And never go to other single people for dinner; you'll walk away with nothing.
Don't let shame get in the way. Getting food is a way of life. You're single. Your friends are already judging you. Your family already sees you as a failure. They’re really just giving you the leftovers because they’re worried you’ll come back for another dinner. They’re trying to get you out. So, enjoy the leftovers. Enjoy all the food people give you. And keep it classy.

Yom Kippur is when you're sealed in the book of life.  But you really should be thinking about getting married. You should be checking out people in shul. You need to seal yourself in the book of love. If you're a guy, do whatever you can to look over the Mechitza, if you have to. Stand on a chair, do it. 
As a woman, I will give you some advice.

Yizkur
Yes. The memorial service.
Some people go to clubs, others go to bars, others go to their niece's little league game, others go to speed dating, others browse the computer. My suggestion is to go to shul on Yom Kippur. There is no better time to meet your Jewish match than Yizkur. When others are remembering their loved ones, you should be meeting your love.
 
We Feel Bad
I want you people to meet. I see you sitting in shul without a Tallis and it's pathetic. I see girls with no head covering and I'm worried they're heretics. Then I understand, why they have no doily. They're not married. That makes me feel worse than knowing they're heretics.
On Yom Kippur, as congregants, we feel like we have to do Teshuva for you. That's how bad we feel about seeing your pathetic singleness.

Step Out for Yizkur
This is when you make your move. In shul, we're thinking about the deceased. That's when you make your move, outside.
This is when the single girls go out. If they're inside, they're probably thinking about a lost  loved one. It's not proper to jump into Yizkur and stop the Kel Maleh for you to get her number. You can't write on Yom Kippur anyways.
The family members we all lost would like nothing more than to look down from heaven and see everybody in shul with a Tallis.

You Don't Have To Look Good
Most men look disheveled. On Yom Kippur, you have an excuse. Your shoes can look off. It's OK.
Yom Kippur is like Tu BAv. On both days, the single women would run in the vineyards in white garments. Yom Kippur, like Tu BAv is a holiday of love. So focus on the ladies. Not repentance. Why white garments? You expect them to get married in black?! On Yom Kippur you can also wear white with no worries. Without eating, you don't have to worry about stains. You run in the vineyard, eating grapes, you're going to stain the dress.

Make It Look Like You're Devout
During the service, they're checking you out. 
Women are attracted to the guy that looks like he's really squinting his eyes. That shows commitment to Gd.

Don't Do Shiva Houses
Visit Shiva houses, and comfort the people. But that's not the right time. Wait for Yizkur.

Simchat Torah
Simchat Torah is your next chance. Don't hit on girls on Sukkot. They have a Lulav in their hands and they can hurt you.
The singles will be showing up to shul for Simchat Torah. You can tell the single people by how cute they think the kids are. If they're holding little ones, saying something with a hipitch, and pinching cheeks, that's probably a single a girl.
Don't dance. Nobody looks like they have moves when dancing in a circle. I can care less how much kicking you do. Skip the celebration and make a move. Go over and talk. We want to see you guys leaving the celebration. We just want to see you married. It's pathetic seeing you men in shul without a Tallis.
In Israel, they do Yizkur on Simchat Torah as well. Excellent. So, if you miss your chance, just wait till the next time people are thinking of their loved ones who are not with us anymore.

After the holidays and Yom Kippur you always have Shabbat. Kiddish is the perfect time to meet your special someone. You'd be surprised to find out how many girls like Kichel. 

Tu B’Av is here, the Jewish holiday of love, and that means it's time for single people to meet their spouse. We have one day a year and this is our chance to get married. So it's time to prep and pray and meet Mis... Right. 
If the urgency hasn't convinced you, here are reasons why I know you should get married.

Married People Invite You and Feed You
Single people invite you for dinner, and then they invite you to bring the food. “You are coming? Maybe you want to bring the kugel… A little extra chicken and brisket. We’re not inviting you for nothing.” That and a request for dessert is the usual discussion you get as a guest. I have been to dinners where I had to bring my own chair. Married people have chairs.

Too Old to be an Uncle
I can’t go to little league baseball games anymore. I am too old and single. I can’t be a candy man in shul either. It’s creepy. I get married and I won’t get accused of being a scary old guy when I show up to the jungle gym.

Don’t Have to Sit at the Kids Table
I don’t know how this works. I guess they think 8 year olds and 40 year olds are all single so we should sit together. I personally don’t like talking about Barney the Purple Dinosaur and slime, but I do like chicken fingers.

You Can Wear A Tallit Shawl & Head Covering
You're not a freak. Women with no head covering and men with no prayer shawl at shul are branded as losers. When you don’t have a Tallit, people in shul are staring at you. Suddenly you get married and you can wear the secret uniform, no questions. Nobody will ask you what you are looking for. In shul, I am usually looking for the Siddur and what page we're on. If a girl is there, amazing!

Somebody to Scream At
There is so much frustration in daily life. When you are not married, you have nobody to scream at.

Somebody to Complain To
If you get married, you will need somebody to complain to. Marriage is tough. Your spouse is the perfect person to complain to about that.

 Have Kids
The next generation of you. You are awesome. Clones of you should be in this world. 

To Not Get Old Alone
It can be really depressing to look in the mirror and see yourself getting old. This way, right after you look in the mirror, you can see somebody else that looks real bad too.

Another Reason to Have Kids
Who is going to take care of you when you get old? If you are not married or with kids, the answer is: nobody. Nobody is volunteering for the job to be your child. You've got to pay for that, and ingrain the Mitzvah of 'honor thy parents.' Make sure they get down that commandment, so that somebody will visit you and take your money when you're gone. 
You got no kids and you are watching TV, you’re stuck having to get up to get the ice and the remote control yourself. Having kids will help you stay stationary.

Decent Food for Dinner
For some reason, once you get married somebody starts cooking every night. When you’re single you are living off peanut butter and Wacky Mac. I can’t explain it but once you’re married and somebody else is in your life, there’s freshly cooked food every night. Baked cookies somehow appear. Either that or food that was cooked at some point and placed in the freezer.  is continually thawed out for your enjoyment.
This is why Jewish people get married. They want dinner. They want a full dinner that they don’t have to carry a chair to.

So, for the sake of Tu BAv, decent dinners, not looking like a freak sitting at the kids tables and the hopes of not needing to get up from the couch, feel bad about yourself and get married this holiday. I'll support you.