To clarify, Nextcloud is awesome. But may be overkill for personal use. Syncthing by order of magnitude is simpler and works beautifully with Tailscale. Like, my parents could've set this up.

For auto-syncing photos taken on my Android phone to my desktop I decided to use Syncthing. This HOWTO was helpful in getting Syncthing setup on FreeBSD to run as my user:https://blog.kollerie.com/posts/2021/syncthing-on-freebsd/Nice!#Syncthing #FreeBSD #RunBSD #Android