syncthing might be worth looking into. ive been using that more and more the last few years for anything that i use daily, things like keepass, plain-text notes, calendars/contacts, rss feeds, then everything else that im "self hosting" are just things that i might only use a few times a week so its no big deal if i lose access.

its so much simpler when you have the files stored locally, then syncing between devices is just something that can happen whenever. anything that is running on a server needs user permissions, wifi, a router etc etc, its just a lot of complexity for very little gain.

although keep in mind im the only one using all of this stuff. if i needed to share things with other people then syncthing gets a bit trickier and a central server starts to make more sense