If it’s binge eating, ie you can stuff yourself without feeling full then it’s a blood sugar spike most likely. You can reset this in a couple of days and return your values back to normal. Get all the junk food out of the house along with white carbs and get some eggs and vegetables. Eat small low carb meals for a couple of days and see if that puts things back to normal.
Unfortunately when dieting it’s easy for your body to rebel (blood sugar spikes, lowering leptin etc). It has quite a few ways to get you to return the deficit.
Dieting long term is actually easier without exercise, you can simply cut cals and eat the same safe stuff daily without worrying about loading for workouts which can get you in trouble. Long sweet spot sessions need big cals which makes it attractive for dieters, but it’s not sustainable for long if running a high deficit (probably 500ish for most people would be a rough boundary).
You can also experiment with a bit of trickery- your blood sugar levels will spike shortly after eating, and high if they were low from dieting - you can make sure you’re out for an evening stroll or busy doing something away from any source of food until the levels die down, ie once you feel satiated. This can take hours.
Either way, stick at it. Just make sure you learn the danger points and have a plan to deal with them in advance so you don’t keep getting caught out and lose all your hard weight loss work. Good luck and persevere!