What I have a difficult time reconciling because I don't know you, but because of what I observe, is that you seem to be an emotionally strong person. You don't take shit, you don't suffer fools gladly, you call shit out, and you don't want to die. But you don't want to be alone, and consider leaving your partner as worse than what you're experiencing and don't want. From all you describe, it sounds to me like you're in a human trafficking situation, an intentional deep mind fuck. And yet you're not crushed. It just doesn't quite line up for me, and I feel confused like gaslighting. That's not an accusation, that's just me saying how I experience what you post. Does that make sense?
I don't know if you've ever been in a DV shelter, which you absolutely qualify for, or in transitional housing, but in such places, no one is alone, and believe me, there are times one would want to be! There is practical support for getting housing and benefits to help one get self-sufficient.
I've always made a point to not judge you or get codependent and try to fix you or your situation. I make a point to be accepting of what I have no control over and wish the best for you and hope good things for you. That is as active effort of compassion, far more difficult than trying to fix or change what I have no control over, and making your stuff about me rather than you.