I have used ai on so many assignments I can't write like a human anymore

To be honest, I feel really embarrassed about this. I don't know who to talk to and I just want to get better. When ai came out I started using it to make my essays better but this started an unhealthy reliance on it where I couldn't really write without it. Once I realized this, I tried to stop but now every time I turn something in it gets flagged. I have never actually got punished for it, but it is so stressful to have to talk to the teacher every time. How could I start writing with my voice again?