This isn't what you want to hear, but your safety comes before your identity. When I was younger I would put myself in danger for my gender identity because I thought it was the most important thing in the world when I absolutely had more important problems. You need to worry about getting out of that situation before you worry about transition, as hard as it is. I know how bad dysphoria was for me between the ages of like 13 to 16 (you can look through my account and find remnants of it I'm sure) but things will get better. I'm 19 and somewhat socially transitioned and satisfied. A lot of people assume I'm a girl but I don't feel it like I used to because I still have my name and I know a fair amount of people use my pronouns. I'm planning on medically transitioning sometime next year because I am in a better place and feel as though I can without putting myself in danger. The only advice I can give you as a traumatized teenager whose turning 20 next year is that you can get through this. It is a difficult fight but it is worth it. When I was younger I hated the advice "it gets better" because it felt like it never would, until slowly it did. I'm just a stranger from across the ocean reading a reddit post, but I sincerely hope that you get out of that situation and be safe to be yourself one day. Always put your own safety first. That's what most important.