I've realized I have C-PTSD (in addition to my anxiety, depression and OCD). I've gotten recommendations on here to try EMDR or neurofeedback, but which one do I try? Which one will be most effective given my situation?

Here is what I am struggling with with the C-PTSD:

When I was a kid (over 20 years ago), I suffered two near-death health experiences. I was hospitalized for a long time and it left me with permanent physical disabilities. Plus, I have new health problems that pop up left and right to this day so it's almost like I am constantly being "re-traumatized" My life has been left limited due to my health alone. Ever since my second near-death trauma, I've been having C-PTSD symptoms. I can't sleep in the dark, only with lights on. I have nightmares at least once a week about bad, graphic, violent things happening to me to the point I stress about sleep. I am terrified of every little thing causing me to die and of someone coming to hurt me. I am unable to be alone at home because of my sheer terror. I am extremely jumpy at every noise, even the phone ringing. Everyone in my life for 20+ year told me to ignore it/"you'll grow out of it." I didn't. It got worse.