I know this is hard to hear, but stop with the "tricks" thing. If you want to lose weight, eat less, eat healthier, and get more exercise. I know, I know, it's not just a simple "calories in minus calories out"; there's more to it, but this is where you need to start.
You need to eat fewer calories. As lame as it may sound, install an app like MyFitnessPal and count calories for a while. You don't have to do it forever, just until you start developing an intuition as to how much things "cost" calorie-wise. The most important thing is that, when modifying your diet, you do it in a sustainable way, something that you will stick to. If you hit your target weight and then go back to your old eating habits, you will gain that weight back in no time.
You're also gonna have to exercise (in addition to the diet changes; exercise alone probably won't help that much). This doesn't have to mean going to the gym for two hours every day. A half hour walk once a day, or a half hour run three times a week is fine. There are many other aerobic options if walking or running isn't your thing. If you aren't feeling fit enough for something, start slow and work your way up to it. You can also do some light resistance exercises like push ups, tricep dips, squats, lunges, planks, etc. to build some muscle (running will build muscle, just it's mostly only in your legs). These exercises will burn calories in their own right, but adding muscle will increase the amount of calories you burn even while you're sitting around doing nothing.
I'm not saying this is easy. It's fairly simple. But it's not easy. Don't go for silly "tricks". They won't work, and you'll be trading one unhealthy situation for another. Change your diet and exercise more. That's it. Find something you can stick with and... stick with it. Simple. But not easy.
Edit: the only real "tricks" I can think of are mental. Throw out all your snacks at home and don't buy any to replace them. Only keep food that you'll eat as part of your regular meals. Avoid restaurants if you can; if you can't, only eat 2/3 of what you're given, as portion sizes and calorie counts are high. Keep a water bottle with you at all times, and if you're tempted to eat when you aren't supposed to, drink a bunch of water until you start to feel a bit more full. Oh, speaking of that: don't drink anything but water.