I feel really guilty for bullying my brother and once he moved out he hasn't spoken to me for months. It has divided up my family.

When I (25F) was younger, I used to bully my younger brother (22M) a lot and call him ugly names and about how he would grow up to be an incel failure, how he is never going to have a girlfriend and how mom should have aborted him. He slowly became really distant with me until recently not speaking to me unless he absolutely needs to. I've tried calling him and saying sorry but it seems like he has blocked me and won't listen. My parents are mad at me and I'm currently unemployed because work is too stressful. What do I do?