> I have tried to use LibreOffice and you have to learn an entirely new tool.
I use word processors so rarely that every time it's like learning a new tool. Whether it's Word, Google Doc, LibreOffice, or anything else.
I will say that Google Docs and Word both feel a bit more "polished" than LibreOffice which still feels very distinctly like a 1990's era desktop program. I guess because it is.
LibreOffice very much took cues from the old Office setup. While alternatives like OnlyOffice took cues from the current Office setup.
Latterly, I worked at a predominantly open source company that switched from LibreOffice to Google Docs over the screams of many. It was a night and day improvement both in terms of the software itself and the ability to collaborate.