This is how I steal food.
I've been doing it for almost 10 years and it's worked hundreds of times. Maybe it could help some of y'all too. I try to lift when I'm shopping for groceries so that I blend in better but you can make a very small purchase if you're hurting for cash and you'll possibly get away with a lot of other stuff too.
Start by finding the right stores. Try to go to one's that aren't near your home or where you usually shop. This is a rule that I break all the time but really shouldn't.
Here's a master list of stores with accompanying information: https://raddle.me/wiki/shopliftingml
The store I go to isn't on here but it's a pretty popular grocery store where I live. Okay, let's do it. If you have no money at all, try to track down a couple of quarters or a dollar from a couch, floorboard, friend, foe, or stranger. After you got it, make your way to the store.
I usually wear boxer briefs and either a hoodie or big shirt, often both, and then put things in the front of my pants, inside of my briefs. I've gotten multiple packs of sushi, granola, ice cream, whatever, like this. You can even wear two pairs of boxers if you don't want your food to touch your "stuff." The briefs work best because they grip your legs and prevent stuff from falling out as you're walking around. I will also wear my pants with the top button undone and my belt done super loose when I walk into the store. You can tighten your belt while the stuff you've lifted is in your briefs and it will kind of push it into your lower chest and make it stick out less. Your big shirt and sweatshirt should somewhat. disguise the bulge. It's definitely easier in the winter because you can wear a bigger jacket and get away with more. I've even gone as far to fill my front and back with 2 king-sized sheets and 2 pillow cases, as well as other stuff like headphones at Target. It was sticking out so far on both sides, and I looked ridiculous but still not too out of the ordinary. Just walked out. Also, so much sushi. Grocery store sushi is super easy to steal and has a decent amount of protein. There are also vegan and non dairy rolls at some grocery stores, you just gotta keep an eye out. Also, this has proven to be the quickest non-cook meal and is super easy to grab on the go.
Okay, so now you're at the store. Grab a handbasket when you walk in. Go to the produce dept. and buy a single banana, or jalapeño, or donut, or whatever. I think the jalapeños the cheapest, at least where I live. If you want to spend a little bit of money on groceries and not steal everything, then do any legal shopping first, before you put anything in your pockets or pants. A lot of people say to "get in and get out" ASAP and I think that's great advice but I also do a small amount of shopping (at least 2-4 items, legally paid for. I try to stay under 10 so I can use the express lane). I think it looks better to do this but it's not necessary. Still, I keep it fast. Get in, get out, but blend in and relax. Also, try to be alone. I don't think it's a good idea to shoplift when you're with other people.
Get everything thing you want, first the stuff you're paying for, then the stuff you're lifting. Put it all in your handbasket for now. After you have everything, find a hidden spot. My store doesn't have too many of these and also has LP/cameras but I've found 2 isles to work the best: The dog food isle and more importantly the birthday card/school supply isle. That's because I see the least amount of people in these 2 isles. Luckily there's like a pole and rack of cards kind of obscuring the camera's view, so I'll go near that and act like i'm looking at/grabbing something behind the rack. Then I put everything in my pants as soon as possible. I'll also put stuff in my pockets if my sweatshirt or t-shirt is big enough to drape over my pocket region. Try to wear pants or jeans with 4 actual pockets. This way you can put something in each pocket and stuff in the front if your briefs and possibly the back. After everything's in my pants or pockets, I'll head to checkout immediately. My store doesn't have self checkout so I find the shortest line. Pay fast, with cash if you want, but i've always use card and have never had a problem.
If I ever get stopped, I run. This is why it's important not to come with other people because even if you do get away, they might not and if they don't, then you might be f*cked.
TLDR: Be inconspicuous, blend in, be fast.