How to feel beautiful?

Hi! Sorry if I come across as annoying but I get quite depressed over my body & looks. I know it's a bit pathetic but it effects my everyday life since I had a hard time growing up especially in school with bullies.

I'm only 15 but honestly I feel as if I have a form of PTSD as I try my hardest to escape the past, finding my true identity under the fake me that devoleped. I have lost loads of weight (as I turned to food during the time) and cut right down on makeup which I used as a mask to fit in but am still not happy with my looks. I still get vague reminders of her and I hate it.

I have anxiety, depression, ASD and anger issues. I want ways to make me feel more beautiful and amazing in myself and battle against this.