And I'm another who self hosts Joplin. My wife and I use it on our desktops and mobile devices. We specifically switched to it from One Note and it's been perfect for our use!
I used it extensively as I was writing (I'm an author) to make notes about things I needed to go back and correct, or an idea to incorporate, etc.
This is the one I'm running in a docker container.
https://hub.docker.com/r/joplin/server