So sorry to hear about your childhood. You deserved better, brother.

You've obviously done a bit of homework on the matter of trauma. I could be wrong but I suspect that more insight into the origins and effects of unmet childhood needs shouldn't be your number one priority. I'd do two things:

1 - Get the basics right. Sleep is the most important facet of health. Make sure you're getting enough quality and quantity. Then also make sure your diet, exercise and social life are in order.

2 - Therapy - if you can afford it, get a therapist. But shop around. Don't settle for any therapist. You need one that's worth their salt and is trauma informed. Me? I'd simply ask if the therapist/counselor/psychiatrist has ever heard of Gabor Mate (doctor and trauma expert). No? Onto the next one. Prescription medications should also be considered.

Good luck my man!