This is ultimately why I ditched Nextcloud. I had it set up, as recommended, docker, mariadb, yadda yadda. And I swear, if I farted near the server Nextcloud would shit the bed.
I know some people have a rock solid experience, and that’s great, but as with everything, ymmv. For me Nextcloud is not worth the effort.
The one that was lifechanging for me is audiobookshelf. I LOVE having full ownership and control over all of my audiobooks, and the ability to enjoy them on any device I choose.
Chiming in for Radicale. Been running it for a couple years. It’s great