Hi düsterade. Welcome to Psych Central. I am sorry you are feeling trapped and in a rough situation. In US when someone turns 18 then they can move out and be independent of parents. If that is a goal that might help you, then you might consider it and work towards it. Having a goal can motivate us to overcome difficult situations.
You are in a difficult situation and if you have an option for professional help, please consider it. If not please consider crisis support lines that may help you get through difficult situations. There is more here for support links
You also may find these articles interesting
https://blogs.psychcentral.com/narci...an-affect-you/
https://psychcentral.com/blog/coping...sistic-parent/
We are all here for you. You cannot rely on us to tell you what to do but we can offer you support and understanding and acceptance. We may offer you options but in the end only you know what is best for your life. Thanks for reaching out. Hope you get the support you are seeking.