I'm sorry you are having to live with this inside and feel alone with it. Do you by any chance know a rav not in your community who wouldn't know your father that you could talk with? You'll meet people here that will want to sincerely be your chaver, in a deep way. It is very possible to talk on the phone and get to know them in person. You are absolutely not alone, and do not have to hold this inside all alone.
I had a farting in public sarcastic father, too. but he never laid a hand on me and I knew he loved me, though as an adult I had to ask him to please tell me he loved me. I needed to hear it. My mother was the one who hit me, violently, pretty often. Until, like you, when I was ten, I grabbed her hand as it was coming down on me and told her she couldn't do that to me any more. It took many years for me to even be civil to her, and many many years of therapy to get to a certain amount of forgiveness. Even on her deathbed, when she apologized for how she had treated me and asked my forgiveness and I told her I had forgiven her a long time ago, I knew that wasn't entirely true. I asked "H for a lot of help on this. I really didn't want to hate her, and I knew there had to be a way that that could happen.
I wish you peace, above all else. You will be such a wonderful father. Can I come live with you? I still want my mommy.