England, what happens if Im a 17 year old who leaves home, do i go into foster care? What help do i get?

Im not going to get super into detail, but ill put it bluntly, i first tried running away when i was 14, i have been incredibly mistreated and hurt on a regular basis. its not that serious because its not a "daily thing" but when my mom gets drunk she constantly tries to kill herself or tells us to do it, or most commonly, she throws hands at me or my sister.

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She lives with my dad, who condones this bbehavior essentially excusing it as my mom struggiling

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Ive never been that close with my mom, i never needed a mom, i did when I was like 14, but i need to get out.

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I read that 16-17 year olds can live alone or with a friend, but id need support because i want to gef into uni, im so lost on what to do

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Can i get a restraining order, will i go into care? Will i have to move college? Will i have no items of my own? Will they move me across the country? Im scared to speak out because i feek like theyll take me away from college. I have nobody but people in college.