Stay with my husband is the correct?

Hi my husband (27) and me (22) have been together for four years and three years married. The relationship started as a caos, I moved with him because I had problems with my dad at home and when we started living together he wasn’t exited at all about sharing space, the relationship turned abusive physical and emotionally from him but I always stayed by his side even when I know he was cheating. I’m not an angel, he deleted my instagram account without permission and when i wanted to opened a new one he deleted all my friends so I deleted instagram again. One month after we get married I opened a secret instagram account where I had all my friends, i felt free and I spoke shit with my friends about him and I texted one guy, I year later he found out and then nothing gets the same of course, but we stayed together because he forgave me or that’s what I thought because the same year (2025) he cheating on my again emotionally and physically with a girl for five months until i found out. After that I moved with my dad but he said sorry and started to do thing that make me thought everything will be different and I came back. Long short story He keeps embarrassing me and remembering about the secret Instagram, he said he can’t trust on me and he still stalking my phone, my account and I understand that he is hurt but I feel that I’m carrying a problem on my shoulder, always it’s me, i always the problem. Yes I talked to him about the cheating but I never make him feel like he is the worse person, I don’t even talk about it anymore.

I want to get divorce after we wanted to buy a car but he wants that the car is only under his name but I help him to pay it. I said no, and I realize there’s no future on this relationship because when I said no to that his response was “well then we don’t buy the car”. He doesn’t want to share big things to me and that’s okay but dont be mad if I don’t pay the half. And finally I want to pay the half of the thing that we still have together and then leave, I’m planning to speak with him after I pay in fulll. Those days I’m thinking about it and sometimes i want to stay but sometimes i wanna run away.

What do I do?