Abusive parents

Did you guys ever deal with emotionally abusive parents? If so how did you deal with it?

My dad and my step mom always team up on me when I end up doing something wrong...even if I don’t even do anything wrong. But since I’m still doing one week in one week off arrangement with them and my mom and step dad, they seem to have a grudge against me for that. My brother moved in with my father and step mom when he was 16, he’s 20 now. But recently my boyfriend took a job my stepdad offered to him a couple weeks ago. Anthony asked if he offered my brother the job because he wouldn’t feel right to just take it if my brother didn’t have an opportunity. Long story short my step dad lied to both me and my boyfriend saying my brother denied the offer and I just found that out today. My step mom blew up on my calling me selfish and how karma was going to ruin me and my boyfriends life because I didn’t step up for my brother. I just don’t know what to do. I don’t want her in my life at all. I’m always the evil person in anything involving family drama with my brother. But I don’t know if I could just block them out completely...I’m so lost