Is it normal to still be angry at my father?

my father was an abusive habitual cheater who would beat my mom in front of me and behind closed doors, would force my mom to have sex with him and he would leave some nights to go to the bar and not come home for days or weeks. and when he did come back home randomly he’d act like everything was peachy and nothing he was doing was wrong.

we were dealing with homelessness because of it, he was the main breadwinner of our family and when he left, my mom had no other choice but to go on welfare. during this period we weren't financially stable, we never knew if the electricity was going to be shut off because we couldn't pay the bill (which frequently happened) and we’d have to go to other people’s houses to shower and use the bathroom. we moved frequently from our house and in between we slept on our grandparent’s couches or in a cheap motel room while my mom worked her ass off to make sure there was food on the table. my mom was never home because she was at work, working long hours and taking care of four kids all by herself. my drug addict aunt lived with us to make up for the absence of our parental figures. she made sure we all were fed in the morning and went to school.

when we *were* home, we’d have the constant fear of our dad breaking in, in a rage and killing our mom out of jealousy because one day after being gone for days he randomly dropped in and he beat the shit out of her in front of me and then hit my sister and leaving a welt on her face because all she did was call the cops (which i told her to do because he was strangling my mom)

like idk, that point in time was such a mess that i don't know what to feel about it anymore