My Revenge on the World Failed, so I Became a Good Person

My name is Shen Guixue. My family was exterminated eight years ago. The fate of my family is uncertain. People who destroy families have no conscience. They kill everything they can and destroy everything they can. So after eight years, I plan to kill them all. My unreliable master told me to let go of my hatred, and my partner advised me to forget the past and start over. I didn't listen. So I became possessed, like a rat crossing the street, and everyone yelled at me to beat me. But after becoming a demon, I somehow didn't want to take revenge on the world. I want to save people. Purpose: Don't carry too much baggage