My parents separated multiple times. Messed with my head some. Dad is an alcoholic.
It’s been over ten years since the beginning of that, but I have an incredible relationship with both my parents now.
I never want to tell someone what to do. I don’t know you’re exact circumstances so I won’t assume much, but even though it took years it was the honest hard conversations with both mom and even more so my dad that made me better. I think it’s made them better. It’s about the approach. This is just my experience.
If you do ever have these conversations with your dad I wish you a great deal of luck.