How do you navigate forgiveness and resentment toward adult with CPTSD who failed you, neglected or abused you when you were a kid.

I wouldn’t make for a good Christian I am not big into forgiving lol but I do have to acknowledge that my parents both had pretty severe trauma and that despite being pretty incompetent they were (especially my mom) very unsupported/received no help. I feel like a lot of my CPTSD comes from my mom’s impulsivity, violence, substance abuse, depression all of which are symptoms of CPTSD. Wondering how people out there navigate this as I know it’s a common situation for trauma to run in family.