struggling

Hai i’m 18M trying to better myself, throughout my life i’ve tried to fix my problems and others problems, and with that obviously comes baggage of what you deal or put up with, my father never really loved me, and i’ve accepted it and moved on and tried to better my life, with that knowledge i motivated myself to get my diploma during high school while working a job towards the end i worked two jobs, and in the end i did graduate, and now in my first year of college, which i just finished my first course which im happy about. But it’s never enough for my mother who’s overprotective, i can’t get a car because she’d always call me asking where i am and we have multiple cars at home so i don’t need to buy one myself, she then goes on to ask me to cut my hair and go to the gym, which my health is fine im just a little skinny but not skeletal skinny like, and my hair isn’t even overgrown it’s just a little long. She threatened to call 911 and let them take me to a mental facility because she thinks that i have a mental problem (which i don’t). i told her to do it or take me there so if they prove that im fine that theres nothing wrong but she won’t. she said she wants me to leave the house and i said sure i tried to get baggage and leave but she stopped me saying “do you want to hurt me?” which honestly i dont know how to answer. sure i may argue with her over small things or disagree but i wont hurt her, ever. i just want things to be better ive tried so hard to not only deal with what’s on my plate but with what’s on others. i feel like my mental health is declining everyday because of this, ive given up on finding a partner, and given up on finding friends. i’m fine the way i am but its just theres things that aren’t necessary for me, i can do fine without people like friends or a gf/bf or going to the “gym”. i just want my life to be happy and not full of dread. and i keep reminding myself that after i get my degree that life will fix itself but im slowly losing that vision (ill keep working for my degree regardless). some advice or help? and yes ive been depressed but never wanting to hurt anyone or myself but i feel like sometimes i want to just give up on life. i’m sorry if this post sounds depressing i just want to get over this and live a normal life.