Friend’s phones, home computers and devices of other family members.
Unattended PCs and laptops at school. According to a music teacher who has literally had to clean her work computer after it was used for erotic viewing by students when the music room in a temp building wasn’t otherwise in use.
Web browsers on game consoles, e-readers, VR headsets, smart TVs, tablets, …
Now throw in constant device turnover, software updates, including settings panel changes, and settings values that get reverted, across the board.
I am not sure why you wanted my opinion. That’s less of an opinion and more of a list of what counts as ordinary for the last decade or so.