Is it normal to have “imaginary conversations”?

I am a 19 year old boy, I know this sounds EXTREMELY weird, but hear me out. I somewhat recently realized that I often have “imaginary” conversations in my head with people, usually when I’m alone at night. I’ve lived under abusive parents for years. They took me out of school years ago and I have basically never left the house except when absolutely necessary (I’m going to be getting out of that situation soon, though, thankfully), so I have absolutely no one to talk to. I was “pre-diagnosed” with a bit of depression the last time I was at the dr’s after a screening, though I never went back for a more thorough examination. I found that I often at night have lengthy conversations with people I knew from the past. Often I’ll imagine I’m venting to one of my teachers from middle school, explaining everything that has happened the last several years, or I’ll be venting to this one boy I knew from then and almost became friends with (I had some social anxiety then and didn’t really socialize well). Other times I’ll imagine I’m talking to a completely imaginary friend, venting to them, talking about things I like or ideas I’ve had, talking about the future, or just talking about stupid stuff like something I seen on TV. I’ll also imagine venting to my parents, building up the courage to completely blow up on them and tell them exactly how I feel about them and how bad they’ve hurt me. Other times I’ll imagine I have the courage and strength to hurt them physically the way they hurt me emotionally. II only recently realized this might be unusual one night after I had a rather lengthy conversation and began wondering if this is normal or something I should be concerned about. Often times I’ll end the conversations in tears and cry for a while. The conversations feel like the most amazing release, especially if I end up crying, and it helps me to sleep. I also find that nights I don’t practice this I tend to be more likely to have nightmares. It’s odd as I wouldn’t say they’re uncontrollable, but I sort of slip into them without realizing and don’t realize it until I’m halfway through or finished and I realize I’m in another one of my conversations. Is this normal? Please tell me someone else does this. Should I talk to a doctor? I really do appreciate your thoughts and help, so thanks in advance.