Keeping busy helps the binging, and, I swear reduces appetite if you’re active. It’s an obvious thing but not buying it in the first place helps. I have reasonable willpower but there are certain things I can’t have in the house because I can’t resist eating the lot! If you’d feel deprived, choose a less addictive treat to replace the one you’d eat compulsively.
For tummy fat, I try to watch my carbs and fill up on extra veg to replace reduced carbs eg give myself a smaller portion of pasta, but extra tomato sauce, veg and a side salad. Little changes can help a lot if you keep them up.
I use a Step for exercise but if you don’t have one, you can just use the bottom stair and adapt routines. You can also jog on the spot while watching TV. Tins of baked beans make good replacement weights for added help. Finally, brisk walking during your permitted daily exercise is excellent - for helping with feeling down as well as physical health.
It’s a vicious circle. You feel rubbish so do less and eat more. But equally, once you get going, eating less and moving more will make you feel better mentally, and then you’ll feel more able to keep it up. Choose projects - a cupboard to clear and clean, a shelf to tidy and sort. Anything that makes you feel productive and pleased with what you’ve done.