I am very sorry to hear about what you are going through. I know this is a very difficult situation. I think everyone has made excellent comments.
My mother was a violent alcoholic. When she would scream at me or beat me, food was my only friend. My father was weak and would not confront her; my older siblings did nothing to help me.
I made an important decision when I was about your age: I decided what kind of person I wanted to be and the kind of life that I wanted to have. I worked hard to not let the chaos in my family distract me from my goals. I am now in my mid-fifties with a happy, peaceful life - and I am working on my problems with food.
Your father's issues belong to him - not you. Whatever is going on with him is not your fault or your responsibility. You have the right to feel safe and happy wherever you live. The day will come when you will be away from this situation and you can create your own life. Stay strong.