If you’re ever forced to use windows for whatever reason, your college should have computers in a library or something that you could use. As far as office software compatibility goes, the office documents themselves are likely to show up with formatting errors if opened in another office suite, but there’s no such issue if you export to PDF though, so I always did my work in LibreOffice and then turned in a PDF and there were never any issues. For group work, I always found it easier to just use one of the browser-based office suites for file compatibility or for working on the same document together.