I like the table of trying things.
Personally, I’ve found the majority of my sleep issues come from one problem and only one problem: stress. It’s almost the most easily correlated thing I can find for my sleep quality. I’m a light sleeper naturally but I am lighter the more stress I have. Outside of that, I found when I am particularly upset, I will wake up at very early hours and just be way more wide awake than I want to be. I can go to bed at 2am and wake up at 4:30am feeling quite awake but obviously very tired.
If I am able to lower my stress then I find sleep gets much better and so does everything else.
At the current moment, I am actually finding my body is getting progressively more sore everyday because I’m unable to get enough rest to recover from my workouts! Due to poor sleep, my lifts are incredibly unpredictable. One day I can do about four sets of ten then the other day I can only do two sets of 7. Sleep is hugely impactful for getting enough volume when in the gym. I can feel when my muscles just won’t respond to the signals I’m sending - or that my body won’t send the signals I’m asking for - whichever it is.
Highly recommend making sure your stress is low because that has always been the biggest by far contributor to sleep for me. Everything else seems worthless in comparison.