My (F27) abusive mother (F50s) is obsessed with sabotaging every part of my life and I think she’s finally won

I have no idea what kind of sick power game my mother is playing but I am at a breaking point. Every single time something good happens to me she finds a way to inject herself into it and ruin it. I got a job offer last year that would have let me move across the country. She cried and told everyone I was abandoning her even though I literally hadn’t lived at home in years. Then she called the job and pretended to be me to “withdraw” my application because I was “too emotional” to work. They rescinded the offer. I didn’t even know what happened until weeks later when my emails kept bouncing.

I confronted her and she played dumb for a while then suddenly exploded saying it was for my own good and I’d “thank her later” because “nobody wants a girl like me alone in a big city.” What does that even mean

She still has keys to my flat even though I’ve changed the locks three times. She somehow got in a few weeks ago and rearranged all my furniture and threw away a bunch of stuff including a letter from my late grandmother. She acted like it was normal. Like “oh I thought you’d like it better this way”

I recently started dating someone and I stupidly mentioned it in passing when she showed up uninvited. She found him on social media, messaged him pretending to be a concerned friend and told him I had a “history of mental illness” and was “manipulative like her father.” I never even told her about him being abusive so I don’t know where that comparison came from. I found out because he ghosted me then sent me a long confused message saying he couldn’t deal with the drama.

She goes through phases of pretending to be sweet and supportive. She bought me a scarf for my birthday and then told all her friends that I was “ungrateful” because I didn’t cry when I opened it. Who cries over a scarf. It’s always like that. She does something nice then acts like I owe her blood for it.

I’ve tried going no contact. She showed up at my work sobbing and made a scene until my boss made me talk to her. I’ve moved twice, and each time she finds me within weeks. I know how insane this sounds. I feel like I’m living in some twisted thriller, and no one believes me.

She’s been texting my friends pretending to be me. I only found out because one of them called me confused asking why I said something passive aggressive in a group chat I never even saw.

I’ve started recording things. Keeping a log. But it doesn’t help when everyone still says “but she’s your mother.” I don’t care. She’s ruining my life. And now I don’t know what to do. I can’t afford to move again. I don’t feel safe in my own home. I feel crazy all the time. Like maybe she’s right and I am the problem. But deep down I know she’s doing this on purpose.

I just want my life back. I want peace. I want to not flinch every time my phone buzzes.

What steps should I take to cut her out entirely?

TLDR: My mother has spent years manipulating and sabotaging every aspect of my life, from jobs to relationships to my home. She stalks me emotionally and physically, pretends to be me online and with friends, and plays the victim every time I try to cut her off. How can I best cut her out? As I have been unsuccessful so far, trying.