Modern Web has spoiled the average user. You never have to choose a server.
Need an account? Link your gmail/meta/whatever.
If there is a little bit of friction, the average user won't use it because corpos made sure that everything is a one click setup. And Lemmy is different in that regard, a bit old school.
Depends on what access you have on your PC.
My two steps are always the same
Then, depending on your work requirements, I would deactivate OneDrive if not used.