Hmm, LibreOffice may not be the prettiest, but it works. For my own documents and presentations I use Typst nowadays. That’s a blazing fast modern typesetting alternative to LaTeX. That being said, I can’t stand WYSIWIG stuff but that might not be everybody’s cup of tea.

I mostly run into stubborn manufacturers like Roland that only release their musical instrument companion apps for Mac/Win and leave Linux Digital Audio Workstations hanging.