Can anyone advise me

I know this isn’t the right place to ask this question, but I spend so much time on here and I feel connected to the site and the people on here…I don’t have anyone to talk to. I have a girl who absolutely refuses to break up with me. Like she literally won’t pick her her shit and leave no matter what. It’s been going on for years. I get threatened because of what I do every time I try to end things. All i ask if for my peace, nothing more. I thought I would never see a day in my life where i don’t want to be alive anymore. I’m in a bad place right now… anyone who responds can we please keep the trolling off the thread. I need advice. Do I get a restraining order and risk her trying to later fuck me over? Anyone else deal with some crazy shit like this?