I use the web version of all O365 apps, even Teams, and I also have a Windows VM in case I need the desktop apps for whatever reason.

Other answers got you covered, but please back up your personal data before doing anything big, even if you are feeling confident

I also never had an issue with Gnome… 🤷‍♂️

If only it looked bad but performed well, I might still take it. No matter how many times I try, it’s just not stable for me to daily drive.