Ente looks great. I want to use it. Although they open sourced all their code, I don’t think it’s quite there in terms of fully self-hosting.

I tried to set it up on my local machine and the account registration apparently went to their remote server rather than to my local machine. Moreover, their Photos mobile app doesn’t give you the ability to switch to a custom server, yet. This all is when I tried a month ago. 

 I'm in the same boat. Currently using Synology Photos as an archive and using fossify gallery for privacy-first device photo management. I want Ente to solve this, so I'm going to give it another go this month. Will report back.