isolation since childhood

I noticed something that really confused me, i have and had friends who went through alot of trauma or abuse.. but it seems like they never tried to really "fix" it and would just move on with their lives

even if the trauma was so harsh, worse than anything ive gone through they seem to be able to some extent put themselves out there make friends and be honest about their hurt and reach out for help and in some months they get better

but for me... and also if not all of my friends / people i know who didn't just go through trauma but were isolated, we reached to psychology, therapy, philosophy questioning ourselves and everything and trying to "fix" ourselves constantly and are obsessed with self help content

do you guys think isolation is worse than ptsd or cptsd? i feel like its one of the biggest causes and its truly hell to live with if you have been isolated since very young age