I work in software development, I understand websites, webservices and the backend it all runs on at a pretty deep level.

But I never owned an Apple device. So whenever my wife (iMac user) has a problem and I try to help, I struggle with all the basic shit. I don't know the interface, don't know the menu structure, don't have muscle memory for basic key bindings (like copy paste).

Same with my parents, a few years ago my dad gave my mom his old iphone, didn't do any factory reset etc. She used logged out his apple id and logged in hers. But the apps he installed refused to update, very little information from the device about the problem. They don't know you shouldn't do this and just give me the phone and say apps don't update. It took me a while to figure out what the hell was even going on.

Yeah I get you.

Onedrive seems so bizarrely complex. My entire organisation is 5 people. We just want a big shared folder with all our stuff.

Libreoffice and Thunderbird if you can