I have had most of those things. Not getting enough sleep can cause weird symptoms, that issue should really be addressed. I have had bouts of feeling unreal. Actually I am so sensitive to things that I can provoke that feeling here and now if I wished. It is called neural fatigue. It means when a certain part of the brain gets too much stimuli, the brain decides to halt the firing of those nerve cells, basically for cell protection. That is what might cause feeling unreal.

In my case, tactile overload is my main one. Say I put my hand on the desk and try to really feel the desk, it wouldn't take me more than a minute for the desk to feel really unreal to me. People can get this feeling from overthinking things. The best strategy is not then to think about it even more to try to get the reality in in back, the best is actually to focus away from it so the inhibition of the overloaded nerve cells stops.

I also have times when random words just pops into my head. Sure it is strange, I don't really understand it.

But none of this is psychosis and I had this most of my life and I never developed psychotic symptoms.