That was my selling point for Nextcloud, and it turns out it doesn't work reliably. It works most of the time, but for backing up photos it's not enough, and when it fails it's super annoying (you have to resync EVERYTHING from scratch).

People seem very happy about Immich, I'm tempted to try. But people seem very about Nextcloud as well, so it's difficult to tell.

Nextcloud is dogshit.

Immich is the best end user focused app I've ever ran in a container.