Therapy for psychological trauma

Started from when my mother got diagnosed with cancer, she went for a surgery but it failed which caused her entire right leg to become numb and immobile. During that period of time, my dad left for another woman as well and never kept in contact for years since.

The stress of losing a leg, having to walk around with that limp leg and a plastic support, the loss of a husband as well as provide for my family singlehandedly changed my mother alot. She became abusive and i have been a victim of abuse for years during childhood from my mother since. I have tried to be strong for my mother and never disappointed her in my academics but it has got to the point where im getting very tired. My social life has been a mess as well. In school, i was bullied by my close friends unknowingly for years until i found out about the things they had been doing behind my back and the gossip that my classmates have been spreading. I've always wanted someone to confide in and planned to do it with my friends when i was certain i could count on them for help but at this point, i have nobody to help me.