how do I leave!?

I'm am in a toxic relationship. We got together quite young and it started off fine but things went south over time. All we do is argue. There is alot of violence and I am trying to sort it all out. I know I haven't been the best girlfriend to him and I understand why he is the way he is sometimes, but now I am trying so hard to fix everything and make things better and he still keeps treating me badly. I have been very ill in hospital and now I am out, I have started to thoroughly clean where we live. He hasn't hepled. I'm exhausted and I'm worried I may end up back in hospital, but he just doesn't seem to care. All he does is game. He is obsessed with his console. I tried to help on the game last night and because the game updated and used all his data on his phone, he started shouting at me. Saying he wants to smash my head in and that he hopes I drop dead. He kept calling me a thick cunt. I don't know what to do anymore. I love him so dearly but I think he does not love me. Please help