Anybody relate to this

I don't get very restful sleep and I don't know why and up prematurely feeling tired and unable to get back to sleep . I will then feel tired for most of the day unless I somehow manage to fall asleep again for 2-3 extra hours.

What's abit strange though is that even if I feel tired nearly all day, there comes a point (pretty much always in the last stages of my day ) where I stop feeling tired. You would think the feeling would only continue to grow.

Since I don't know what's causing my sleep issue , I wonder if this would be indicative of any sleep disorder in particular?