Please help, i want to leave my family at 17

Hi, I (17F) is in my third year of highschool, I live with my father (45M) and mother (35F), I have a younger sister with 6 years (11F). I love in a small country in Africa, so system isn't similar to America, Europe, Japan, it's far different. Here, starting from middle school by the age of 12-13 till 14-15, you have to study 15 subjects, that being (math, physics, science, french, arabic, English, technique, computer science music, sport, art, history , geography, religion 'islam')which you have to excell at most of them to pass. By the second year of highschool, you choose a major between (science, economy, lettre, computer science) and by the third you have math and technology option from science major. I am majoring in math in my third year, main subjects are ofc math and physics with a little science. I was a kid with pretty good grades till my 9th grade where things started to get rocky a little but I kept my grades as good as possible, I studied in a private school till sixth grade and changed to public. In public school study jours per day could go from 8-17pm, based on the schedule and in highschool it goes um till 18pm. I'll tell you why i explained all of this, but as you can see, students are under a shit ton of pressure. I, sadly, grew up in a toxic house, both parents coming from abusive families and reflected their trauma on me, making a very shy, obedient, nontalkitive, anger issues kid, till I decided to change by 9th grade. I didn't rebel, I didn't talk back, I don't yell, I took their shit and shut up. This year, is pretty year from a lot of students cause lessons and chapters start to change to get students ready for last year (Bac). And it can be tough when you got three tutors for math and a tutor for physics that last 3h. You read right, I have 4 tutors in my 37 hours of studying at school. No I don't have hobbies, I used to draw but not anymore, I stopped going to the gym who I only got to for the first time in my life this summer. No I Don't get to go out, sleep at friends house, I don't have time to go out and buy clothes anymore. My max is the make up my mom gets me. No relatives some cut off (my mom's brother but we'll get into that) some are devils (my dad's mother and his siblings) I don't wanna see, all I had were my grandparents (from my mom's side)

This is all basically an introduction, so you guys can understand what I'm living in.

UPDATE:

So, I started thinking of moving out since 9th grade, when my parents crossed a huge line for me. I have really important exams in that year, with COVID going on it was already hard enough. Till my grandpa got sick, my little sister and I are really close to him so my parents couldn't tell my sister but since I'm the oldest, they took me to the hospital, it was pretty strict and I couldn't see him so i had to sit in the car for 3 hours at least. Till he died.. It was devastating, my mom didn't come home that night, my sister and I didn't know why cause our dad won't tell us, till we saw it the next day on a Facebook post and called our parents. An hour later at the funeral, my dad stands in front of and told me to get up, i have to go my tutor lessons, i was shocked that he'll even think of that, and worst my mom didn't even try to stop him. It's been 4 years and I can't let go. I can still remember how I sat down in my tutor's house cause i studied there with a group, I was close to the teacher and she asked me how I was doing and i mumbled out "he died", I couldn't cry, I still remember how said they looked at me. I'll never, ever, forgive them. And they still shame me for the exams I failed that year..

Other than that, there is the stress and abuse they put me through, calling me a mistake, a piece of shit they wish they never had, a liar, a piece of junk, how I'll be the reason for their divorce, for their death, gor going crazy, all sort of things They made me like that. I won't forget how my dad beat me up with a belt all over my body even on my finger nails for peeing myself (I was 6 years old), how they once abandoned me in the middle of the street and drove off just because i spilled yogurt in my backpack (I was 7-8 years old) I can still remember how my dad locked me in the toilet, made me sit down on its floor and called me a dog (I was 14) how they put my food on the toilet and tried to force me to eat it (I was 12). And I won't go into detail for bad grades. They love me, I know they do, they know they fucked me up, that's why they don't wanna repeat the same mistakes. By 14, I developped a habit of eating the skin around my fingers, I'll chew till their is nothing, and when mom found out, she'll call me crazy and a psycho while yelling of course. Even when I told them I'm depressed and all, next day they made fun of me for making a mistake. They'll do all of that in front of my little sister too, I lost that big sibling pride, the respect, they'll take her out of the room and tell her "don't talk or play with your crazy sister, unless you wanna become like her, a liar" They act like they did nothing, they'll pretend we are a big happy family and laugh while I have buried all of that inside me. That not a week ago they didn't tell me I'm the worst child ever for having a bad grade in math. They refuse to get me a new phone i own a Nokia C10, they control when i shower which could up in two weeks without showering cause they dont like it when i wanna shower and have exams, even haircuts. And i don't have an allowance.

Is it okay to feel like this after so long and wanting to leave them?