You don't say how old you are, but I am 51, and experienced a similar type upbringing.
Myself and my sister always had what we needed, nice home, clean clothes, food on the table, loads of Christmas presents, nice holidays etc, but, my Dad was an alcoholic (still is), and would frequently fly into horrendous rages. This happened several times a week, every week for the 11 final years I was at home. I remember it starting around age 9, and I left at 20.
My parents were always having dinner parties at home, or often full on house parties. They always ended with the house being trashed and my Dad throwing stuff around like glasses/plates, or punching walls, and always threatening to punch my Mum's lights out (although he never did hit her). My sister and I would be upstairs terrified. He also drove us back from the pub when he was drunk. We were both smacked frequently, sometimes across the face. But yes, we had all the nice things too. It's confusing, isn't it?
My Dad was always apologetic when he sobered up. Until the next time of course. My Mum should have left him really. Even after I left home, the pattern continued. Often family get togethers would end in disaster (drunken arguments). When I look back, I see a pattern. When my Mum would visit her siblings, if often ended in drunken raging rows. I mean, why?
My Mum died last year, and even when she was unwell, they were rowing. My Dad is now in a retirement home, and still has to drink heavily every day. He has mellowed massively, and we haven't had a row now for years. He is very affectionate and calls me every day. Always tells me he loves and and I say it back, but I just feel a bit numb about him really. I feel sorry for him, as he's a bit frail, but it's hard to feel the kind of love that I think I should feel, if that makes sense.
I hate arguing now, in any way. It just makes me cry. Thankfully, arguing in this house is very rare. It's just me, DH and our adult DD, and we never have the big rows that I saw growing up.
My sister, on the other hand, has picked up the mantle from my Dad, and causes massive arguments all the time, with friends and relatives. She's a big bully, just like Dad was. She has ruined lots of family get togethers by having huge meltdowns where she's so aggressive that she seems on the verge of punching someone. She's had multiple disciplinaries at work for being aggressive with staff. She has threatened to hit people in shops, if they aren't wearing masks. She hospitalised me last year, by being so aggressive towards me, that I had a panic attack and an ambulance was called. She didn't apologise for this. Her DH is her enabler, because whatever she does, he always tells her she's right. She was sending me abusive messages las year - up to 30 a day - and I had to go NC. We have not spoken since January. She asked me to keep in touch with her DC, and when I tried to facilitate this, she refused access, so I can't see my niece or nephew now. They are only young, and I know they are growing up in the same toxic environment that we were. But to anyone on the outside, things are more than fine - they are very wealthy and have the best of everything.
My only advice would be to try to live a calm life in the here and now. Don't repeat the pattern. 