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?
Some which I can think out of my head are : Joplin Trillium Logseq Notion Obsidian Anytype
If you need to draw, I would look into notion and obsidian.