Have you looked into stuff like this:

https://en.m.wikipedia.org/wiki/PinePhone_Pro

Do they take it out whenever they want to sit down? it just seems a bit uncomfortable

I have one and it fits in my front pockets. I have never put my phone in my back pocket. Why would I? How would you sit down lol

Literally writing from a folding phone right now. It’s so much smaller than any other phone I have had and actually fits in my pockets, and something about the center of gravity is so much easier, it never falls out of my jacket pocket like my old phones used to.

Are you an Apple User? There is a Samsung phone with swappable batteries, and you’d have control over your files. Why are you using Apple products?