I’ve no problem with using LibreOffice for most of my document needs, but i haven’t found a good substitute for microsoft’s OneNote yet. I mainly use it to plan my RPG games and it helps a lot. What alternatives are there for organizing notes on linux, with similar features to those that OneNote provides?
That’s unlucky, I’ve never had any issues with importing and exporting markdown files with Joplin. I even export my library in cleartext every so often as a backup just in case. I’m also very satisfied with Joplin’s sync capabilities with Syncthing.