Something my trauma psych said that stays with me: in the world there will always be someone that could have "it worse than you", that doesn't mean that whatever you went through isn't "bad enough". It's all valid and every person has different lines that push over into trauma/cptsd. From what you wrote you've had a life of traumatic happenings and a bad home life.
My trauma is from my stepmother who emotionally/mentally abused me. She never hit me. Still it gave me cptsd.
We have to learn that our pain and trauma is valid, in whatever form it came from.
I wish you good luck with your healing journey <3