Getting rid of bad SF class

Hello guys, I have the following problem and hope you can help me. I or my son unfortunately had two accidents with my vehicle in 2021, and now I pay a significantly higher amount for the car liability from November. I slipped from 280€ per year to approx. 700€ in class M. Is there any way I can start with another insurance again from zero? Can I cancel the car at the end of November, unsubscribe and re-register with another insurance company? n Insurance? I know, that’s not really the point, but I’m really a little desperate. As a single mommy, this increase really worries me, in addition to all the other increased prices. I still depend on the car for work.