I recently switched to only office. I.get a lot of .docx files cos of uni, and I found only office to have the least amount of bugs. Most of the files I got were broken in libreoffice due to reasons I wish I could understand. For note taking I just simply use neovim and write in a markdown file. For presentations I do the same and use marp to generate the slides from my markdown.
I do todo!() For rust and in other languages I just throw an exception. And searching for TODO comments using ripgrep.