so exhausted that I feel entirely drained

My relationship with my family urgently needs a solution. I feel completely restricted and controlled, and I gain nothing from them—maybe once a year they remember me with something worthwhile. It has reached a point where it's affecting my physical and mental health, because to them, going to a doctor is a luxury and a waste of time, even though they are doctors themselves! I've lost so many opportunities because of their environment and their primitive mindset.

I'm so exhausted that I feel entirely drained. I have no hope that things will change anytime soon, and even if they do years from now, what’s the point if I'm already completely ruined by then? I thought about rebelling, but I’m still scared and unable to face them. I’m terrified of their punishment, and I’m not ready to lose the small things I fought so hard to gain. Trapped between fear and pressure, I feel like my soul has faded, and my mental state has hit rock bottom

My whole life I’ve been trying to appease them and keep them happy just to get what I need, but the moment I make a tiny mistake, they forget everything I’ve ever done, and I’m right back to square one. This suffering isn’t new; I’m 19 now, and these problems started when I was 13. It destroyed me mentally to the point where my grades dropped, my personality changed for the worse, and I feel like my life is completely stuck with no progress at all.
They even reject the idea of me trying new things, working, or meeting new people. They want me to be financially dependent on them all the time just to hold it over my head as leverage to deprive me whenever they feel like it.
The overwhelming pressure has made me think about escaping life entirely... even though I know deep down this isn't the right answer. Inside me, I actually want to live, try new things, and enjoy so many moments in life, but I keep getting this feeling that it was never meant for me. What is the way forward to start rebelling against this situation and rebuild my character?

No one truly knows how hard it is to be the eldest daughter in the family... You're expected to be perfect in everything, look after everyone, and fix their mistakes, while in reality, hardly anyone ever turns around to notice your fatigue or care about your feelings.