I'm so sorry you had to live like this.
My father was an alcoholic. He never hit us children but did my mum. I never witnessed the physical violence but many objects thrown with intent to scare or harm and the arguments were constant.
We could all be sat laughing about something then hear the front door open and instantly the mood would change.
From a very young age I could look at him and tell weather he was sober, a bit drunk and in a good mood or really drunk and ready to start an argument.
Only when I was an adult did I realize how messed up the set up was. I'd do anything to protect my own dc from living like that.