Hey friend, I can tell you're in pain and want to respond, but I don't know what kind of response you're looking for.
From your first paragraph, it sounds like you have a good idea of what's causing the psychotic symptoms: the personal issues that don't have a resolution at the moment. Taking a CBT approach (which isn't very like me), I'd guess you're experiencing something like:
(@#$ing tired of) unresolved personal issues -> X -> increased hallucinations and delusions
Maybe you don't recognize an X right now. But if you can identify an X and modify how you relate to it a little bit, maybe you can break the chain and reduce the symptoms. Is X "I won't survive this", "I'm rotten", "My life is not worth living", etc.?
Besides the personal issues and the psychotic symptoms, that might be something that can change and improve your well-being.
I hear many strengths in what you shared. You have good insight as to who you are, a good relationship with a sibling, and you have tools to de-stress when you're around others for extended periods of time.
I also sense a less than ideal amount of support. Are there people you can talk to about the personal issues you mentioned as well as the hallucinations and delusions? Can you access mental healthcare? If you're not taking medication, do you have any interest in trying?
May I ask what movie? imdb is amazon, which I don't support