Im sorry you went through that in your childhood and sad to hear that it still effects your life today.
It's strange things that seem to have a lasting effect on us from growing up. I was the oldest of 4 and the scapegoat. I had a different father and I think i was just the odd one out.
For me, they would treat me badly in ways that I didn't understand. Like if i was hungry, i was greedy and fat, if something was broken, it was my fault. My sisters could torment me all day but if i reacted I was grounded. If i wanted something, it would be ignored so I would have to ask my sisters to ask for me and pretend it was for them. If i dared confront the unfair behaviour I was a drama queen, a liar and overreacting.

I guess the residual effects would be that i dont know my self worth. I feel below everybody all the time. At home, at work, in public. I don't dare ask for simple things or dare to stand up for myself. I was taught that i didnt matter.
I found myself in another abusive relationship and iv never dared question it, because I thought maybe I was overreacting and being a drama queen. Probably because that's what I was called all those years. It was my therapist that validated my feelings and fears.

Are you in therapy? It could help. Hugs