I'm so sorry for your loss, and trust many of us, we know exactly the pain you are experiencing. My condolences for your father passing.
Before anything else, I'd like you to address these things that you say in your post to describe yourself and your actions. You refer yourself and your actions as:
dumb ass
arogant and stuborn asshole
self righteous
pious dumb shit
poor poor white trash
I wasted our relationship
I ruined my family
I think you are being a little too harsh on yourself. Don't talk about yourself in those terms. It harms you. Remember these few things. It is every father's responsibility to reach out and be there for his children, even if the child rejects him. It was not ok for him to just go along with you leaving. He shunned you too. Blaming people doesn't do any good, but being aware that there is a shared responsibility when it comes to that relationship can help you understand that you are not the solely responsible for things not going well.
The situation turned unfortunate, but it was mixture of poor decision making on both parts. Also remember, you were made believe a lot of nonsense, so you were doing the best you could with the information you had.
You can forgive yourself for playing a role in an unfortunate relationship. And you can take responsibility for your decisions and actions, but degrading yourself and feel completely guilty of causing the entire thing is just not realistic.
It is a sad situation, but please be gentle with yourself. That way you will be able to see the entire picture.
My condolences.