I think I just had my worst American brain moment. Definitely assumed this was common everywhere and am in shock it’s not. Must be nice lol

I can 2nd this advice. Vinegar will basically get rid of any smell I’ve ran into.

Boox e-reader. I’m able to just log in to my Calibre web server and download the book right onto my device.

Slightly better, instead of Altstore get your device registered on the apple developer program (there are cheap ways of doing this) then you can sign as many sideloaded apps as you want and they stay working without having to constantly connect altserver.