Maybe I just suck at relationships

I’m a romantic at heart, but I hate getting close to people now. It seems like every time I put myself in a talking stage or even enter a relationship with a man, they’re awful to me. They make fun of my appearance, my interests, and my personality. Like everything that makes me who I am is wrong. It’s painful to feel like I’m not enough for anyone. The subtle manipulation and emotional abuse is so frustrating. I know they are negging me but then they deny it and act like I’m irrational. I feel worthless, so I keep going back to these men and accepting the treatment. It's a never-ending cycle of pain and disappointment, and I don't know how much more of it I can take.