I need advice

If I've done something bad to my partner, like in this case she's accusing me of mocking her when she asks for help in school and apparently I do this alot. I have never heard about this and I didn't realise that I hurt her, now after months she decided to tell me and said that I have some kind of complex and It just feels so unfair. Im paranoid and jealous and I feel like she's been manipulating me for a long time so is this that or is it just bad communication that feels like manipulation

She wants to cut contact and talk about this in a while, I want to talk about it now and I expressed how sorry I was and that now I know what I've done i can actually fix it but she doesn't believe that I can. I'm just so confused my entire relationship feels so convoluted it's good then bad then good then bad and at what point do I tell the person that I love that I can't do this anymore as well as that she's friends with my friends and I don't want my friends to hate. She's quite spiteful and I don't want her to leak info about me or lie so I'm just scared to leave her