Hiya J, you know, I had to come to grips with my relationship with my mom. It wasnt resolved completely before she passed.
I felt a lot of guilt for a long time about that. I lettered in guilt. Ask Mach.
The thing I have learned it what you are learning. She and I were human. We both made mistakes. Her stuff was from a difficult childhood. I know now that she loved me the best she could. I did the same. It was the way it was and thats ok.
So, I knew the way I could honor that relationship was to take the things I learned from it and use what I learned in my own relationship with my son.
Your dad loved you. YOu know that. He knew you loved him. And in the end, that is what matters.