great helpful post tytlyf (and you have to tell us where your name comes from...is it short for something or what? lol)
Anyway, looking at your screenie, your phone is down to 50% and your screen was on for less than 2 hours. Barbz comment earlier indicated she had a screen time of 2 hours and 3 minutes and was down to 57% remaining.....that to me looks like her phone is acting normal especially when I compare it to yours....you actually only had your screen on for 2 hours out of those 2 days. She is a power user while you seem to use your phone less.
I'll re-admit that I am certainly no expert and I am just trying to learn like a lot of people here, but just wanted to share my thoughts and if I'm wrong, by all means correct me.