Processing Trauma and Dealing with Neglectful Parents

How do you process the trauma you have been through? I wanted to do laundry tonight but I can't focus because I am so emotionally overwhelmed. :( rant - My dad was the stay-at-home parent while my mom worked, and my dad neglected my siblings and I, severely. He very hardly paid any attention to us. There is such a long list of sad memories. He also criticized us a lot. I feel like I would be much more healed if he took accountability for what he's done but he doesn't and he just has too much pride and narcissistic tendencies. I'm so frustrated at him. I told him recently.