Im jealous of anyone who can sleep well. I have been doing all of the above for years as well as testing out different temperatures and also not looking at screens for well over an hour before going to bed.
I just can’t get good consistent deep sleep. I will say one thing that did help was i use to live in the city and after i moved outside of it and it was much much quieter at night (no trucks driving through or random sounds or honking in the middle of the night) i did notice an improvement.