Thank you for the comments!
About the graining/banding... do you mean the scenes at for example 0:35 and 0:57? Those were intentionally added effects from my side to make it look like a memory/more dramatic. Maybe it didn't do the job well enough.
For the flow of the video I've tried to have a slow and colorful start gradually becoming darker and more intensive before the climatic end, though I was afraid of overdoing it with the color correction.
Thanks again, I will try to do better with my next video