[Z_I_F_F]

Very surprised no one has mentioned Synology yet. This has been done. And it's awesome!

I currently have a self-hosted google photos clone and I only paid for the hardware. Highly recommend.

[naasking]

Synology's Moments is ok, but it has issues. Not mobile friendly at all, can only create one shareable link per album, and others can't contribute their pictures to your album. Those are the biggest issues in my experience.