My Little Brother

My little brother is a bully. He’s twelve and is verbally abusive to me and my dad. I know your probably thinking “he’s twelve and that’s what they do” but no, that’s not what any other twelve year old boys that I’ve met do. He’s given me very deep set insecurities and he is constantly scaring me with his actions. We don’t have the best home life with divorced parents and an alcoholic as a father but at this point in have no idea how to deal with him anymore