Also there's small stuff like: Photo map. I've traced back treasured photos that would have been lost in a sea of 44,000 photos by finding them on the map.
Google Photos doesn't seem to have this.
Notes also works really nicely for loads of stuff.
It's useful enough that I could find out the exact spot I slept by the river Seine years ago based on scrolling around Berlin on the map for 5 minutes until I found the photo, taken several years ago on a completely different iPhone, then go back there recently and recreate the picture.
You're taking too many photos. Honestly ask yourself, how often do you go back and look at old photos? Maybe you do, but for me, I realized that I never do. So I stopped taking them.
Google Photos doesn't seem to have this.
Notes also works really nicely for loads of stuff.