I am ready to change, but how? Please help 🙏

Okay so I am a 15 year old girl and I have been overweight for the majority of my childhood and in my teens. When I was 11 I was forced to eat healthy and had to use the elliptical for an hour and a half every single day. I must say, then I certainly lost weight. A lot of weight. I eventually gained all that weight back when I moved to a different house due to anxiety and depression. When I was sad, I ate. Not much else I can say. I am officially 267 lbs and I NEED to change. I can’t let myself get any worse. I have never loved my body. And I want to not only look good on the outside but feel good on the inside. I want to look healthy. Not thin. Any tips will help. Even workout routines I’d be committed to. Please comment!! I’d appreciate it ❤️