Life isn’t fair but for some people it’s even less fair than for others. You have suffered repeated trauma as well as a rough start. Your story makes me very sad.
What you are describing in childhood is consistent with a diagnosis of childhood schizophrenia. Although very rare, it does happen. Schizophrenia (whether in a child or adult) is a brain disorder that can be exacerbated by environmental issues. You had a difficult beginning, being premature, sick, and then in an orphanage. Some of what you report may also have been caused or made worse by a sleep disorder, even then. I can’t, of course, confirm a diagnosis on the basis of a letter. Only a licensed mental health professional can do that following a detailed conversation with you in person.
Since you have so many diagnoses, I assume you are currently seeing mental health providers for treatment. I certainly hope so. Schizophrenia, if that is in the mix, is a lifelong disorder. It can’t be cured but it can be managed with medication and on-going support. In your case, management means that you need to get in control of the things you can control — like addictions, eating disorders and maybe a sleep disorder — so that you have the strength to deal with the things that are harder to control.
I wish you well.