I have childhood food trauma too. But different to yours, and nowhere near as bad, if I could quantify I would say my experience was about 10% as bad as yours. I was forced to eat foods I found (still do!) revolting, berated, shamed and shouted at at the dinner table, then I was bullied and comfort ate, became fat, (I weighed more aged 10 than I do now!) was bullied for being fat, berated and shamed by family for same, comfort ate more, led to a lifetime of eating disorders from the age of 7-14 binge/starve cycle, 15-20 anorexia, unhealthy relationship with food overall once I recovered, until my early-mid thirties (I am the same age as you).
What helped me was 3 things;
Enjoying cooking from scratch and learning about food (a lot of 'food' is not food, in the western world).
Deciding to become fit and strong.
Working out my TDEE (for weight loss once I had become chubby in my twenties/thirties).
If you haven't, you really need to cut off your parents or at least become VERY LC with them if NC is not practicable.
Work out your TDEE. Decide to stick to it most days. You'll find your body adjusts and then if you can safely reduce to around 200cals lower, the weight will drop off. If you have a 'day off' do not beat yourself up, everyone, even athletic people, eats rubbish sometimes.
Look at your good points. If you were beautiful as a teen, and have not had substance issues, you still are, excess weight can and will come off.
Get some foods/meals in mind that are good for you, that you like. Learn how to cook them healthily. Do this, expand on it as you get more confident. Go for veg and pulse rich foods if you can. Learn more about food, develop an interest.
Avoid UPFs, they're not only bad for the body they also encourage binge eating and do not satiate.
I am now not overweight, have biceps larger than my boobs, and am in control. You can do this.
ETA Learn to listen to your body. If you're feeling empty and hungry later on today, fine, eat something. This day can be a positive turning point at this stage. I truly beleive that the issues you've developed in your formative years will have stopped your body signalling hunger 'normally' that's not your fault, and it can be undone if you learn to recognise hunger versus an emotional urge to eat.