Trying to break up with my SO

I've tried to end the relationship with my SO 3 times and everytime he makes me feel really guilty and makes me run around for him to calm him down since he gets really angry and shouts and punches the walls he always shouts that I've found someone better and that I'm a cheating little bitch when that's not the case at all I just need to be alone due to my depression he doesn't understand that and goes mad saying he's wasted him time with me and runs in and out the house trying to get me to follow him when I leave him to it he then cried and begs for me back saying he'll be better and respect me better which makes me even more guilty and I take him back I don't know what to do how do I get rid of him