Have you as an adult ever come to the realization that you were abused as a child when you thought it was just normal? Like being beaten?

I realized when I was 9 and saw my best friend not get hit ever, then I asked more friends and found out that they didn’t either. None of them got the belt, the wooden spoon, choked, pushed down stairs or the verbal abuse either. I started running away at 10 but there was hardly any help and I was always brought home, then it would be worse. I got away from her when I was almost 17.