Do I have an unknown personality disorder?

Hi, first of all, I'm 18, unfortunately a complete outsider, and I can't seem to find any friends. But I'd like to have some.

Why is that? A lot of things come together:

I'm shy, reserved, and uncommunicative. I find 99% of people really weird. Most of them seem strange to me. Or am I just imagining it? I can't hold proper conversations. But I can write. I feel strange and completely different. Incidentally, I'm also gay. I hear voices from a distance talking about me. It seems to me like there's a glitch in the Matrix or a conspiracy at work. Am I underdeveloped? I don't have general interests like soccer, which I can't play anyway due to physical limitations, or I find TikTok disturbing, or online shooters like Fortnite bore me. Instead, I like bouldering and am interested in airplanes. Parties, like dancing and such, are pretty pathological for me. There is no such thing as normal.

About my diagnoses:

I spent three months voluntarily in a psychiatric hospital because of increasingly strange behavior and voices. I was diagnosed with paranoid schizophrenia and an adjustment disorder. Autism was also suspected, but it wasn't investigated further.

Sometimes when I try to talk to someone I think I am severely disabled, then when I write and then when I am alone I don't.

I get the impression that people are constantly trying to hide something from me. Why don't I have the ability to hold normal conversations and know how to interact with others normally? I'm missing something psychologically; everyone else has been able to do it since birth. It's as if they know exactly what they have to do and are driven by something.

Your guesses:

Feel free to ask questions…