Struggling with Insomnia and Mental Health

i have insomnia that comes in random episodes, and I've noticed this thing recently where I can't fall asleep and almost don't want to because I don't want to wake up an hour or so later and then notbe able to fall back asleep because it just happens so often. it's gotten to a point where I stay up until I'm physically unable to anymore because that's the only time I stay asleep through the night. I know it's unhealthy but that's the only way I really ever get good sleep. I know a lot of the causes of my insomnia is linked to my mental health, examples: -when I'm stressed, I just won't sleep and won't feel tired for a night or two (and I mean if something stressful is coming up as well as if something stressful has just happened). - I also can't turn my mind off which is probably adhd related ).I literally can't clear my mind. I've never been able to do that. ever. - I'm not sure if I have ocd but I have compulsive behaviors, one of them being going to the bathroom at night. if it even crosses my mind when I'm trying to sleep, it won't go away until I get up and go. I've tried to ignore it, but no matter how sleepy I may be, I can't physically fall asleep until I go. - this is probably sensory sensitivity (I'm autistic) but I have to have my hair pulled back to where it won't touch or tickle my face at all or I can't sleep. it physically like makes me mad for my hair to be just brushing even slightly on my face. -probably linked to my autism as well, my fan makes this noise that I just cannot sleep when it makes, even though it's so quiet and hardly noticeable and only like once every few minutes, especially with my white noise is playing. The above things i listed aren't the root cause but are definitely contributing factors. I had a sleep study done before about a year ago and didn't get any answers. I've tried so many things to fix it, like prescriptions, supplements, meditation, guided meditation, progressive relaxation, and guided progressive relaxation to name a few. I'm not asking for anyone to offer a solution, but I just want to know if anybody else has or has had the same issues and what your experience is like and if you've found anything that works for you. sorry if this is poorly typed, I'm on my phone and I hate typing on it