Side note how's open office compatibility these days? Last time I tried it yeeears ago there were still compatibility problems that would have made group projects hard.
I observe that every few years Windows is completely changed. It’s a total hodgepodge of decades of crap. That’s the only thing you need to know.
Office compatibility still kind of sucks. It's very usable, but still quite a few papercuts. In my kids case though, Google Docs pretty much solves that problem so it's largely been a non-issue.
While Open Office still exists (and is being actively supported), LibreOffice (forked from OpenOffice fifteen years ago) gets more frequent updates, is more broadly used, and is widely preferred over OpenOffice these days.
I use it and it's a nice replacement for the Microsoft Office suite. In fact, I have Microsoft Office and prefer LibreOffice over it.
I suggest giving LibreOffice[0] a look. Many of the compatibility issues have been resolved and it works nicely.
Actively supported is a stretch. Look at these commits.
For using Teams, I'd recommend just using the web client. I did try installing the Microsoft native client for Linux, but all it seemed to do was open an empty window (i.e. not drawn in, so it showed what was under where it appeared) and wasn't at all functional. The web client seems to work, though I don't use it very often.
Since then I've mostly been at a job where Office is provided and rarely have need of it at home.
Don't bother. I would have said that I was "familiar with Windows", I used 3.11, NT 4.0, XP, Vista, and 10 to a lesser extent and my wife needed help with her work laptop. Honestly Windows 11 is significantly different and apparently hostile enough that I couldn't find anything.