I don't think there is anything out there yet, there are upload/sync platforms like syncthing or nextcloud, and web based photo managers like PhotoPrism, but I

I don't think there is anything out there yet, there are upload/sync platforms like syncthing or nextcloud, and web based photo managers like PhotoPrism, but I haven't heard of anything completely integrated like google photos. Syncthing is much better than nextcloud IMO, worth trying that out for photos.