13F with 78° curve

I am 13 years old and recently diagnosed with kyphosis (78.3° back curve and 54° neck curve). I also have a mild scoliosis of 7°. I know that I am very young but I am honestly so done with people not understanding my pain so I am here for help. I started having pain when I was 4 years old. I have gone to 2 physio therapists, but every time I do exercises my back is so sore I want to cry. I have tried lifting weights, same situation. I went to a scoliosis clinic, but the doctor is a chiropractor (red flag). He also has no MD. He suggested bracing and pt twice a week (which I had to turn down because it is far from home). After going there, my back has gotten even worse and it hurts so much. Even after a few minutes of walking my back goes back to hurting. The only thing that I can do without pain is literally laying down. My parents yell at me all the time to straighten my back but when I do my shoulder hurts so much. I can't do anything I like doing anymore like making bracelets and writing. I feel so lazy but I honestly don't know who to ask for help. Please help me. I cannot keep living like this. I will remove this post in 3 days.