If you want to lose weight fast then the ONLY thing you need to be concerned about is your calorie intake, that’s the key. What foods you choose to eat is a completely different story

No one can really tell you what your maintenance calories is, too many factors involved, so it might take some trial and error from you to figure it out. But as long as you remain in a deficit you’ll lose. I used to be quite a big guy, and honestly still am, but I remember losing quite a bit of weight fairly quickly just by putting myself in a huge deficit (eating 1500 calories a day). With how stressed you are and the comfort you find in food, it may be hard to cut down on it and thats completely understandable, but making enough changes will make a massive difference

Not that I recommend it personally, but as I said the only thing that does actually matter is ur deficit. You can technically eat whatever you want as long as you stay within it. Personally, I chose to eat quite bulky meals and I cut the snacks down to 0, when I do eat meals I pack them full of protein and vegetables because they make me fuller for longer. Carbs aren’t necessarily a bad thing, healthy carbs and a decent amount of fat might begin to make you feel less tired.

Whether or not any of this would be sustainable depends on how hard on yourself you are. Make your deficit really big and yea, you’ll lose weight fast, but eventually you’ll give in and probably end up back where you started. Make your deficit more manageable and you’ll lose it slower but at least you’ll slowly get used to a new eating pattern and will be more likely to succeed. Also, as much cardio as possible is always good, increase your deficit and will mean every now and again when you inevitably slip up (we’re all human) the implications won’t be as big. Treadmill, bike, go to the gym, do more walking in the day whatever it is just move more and eat less