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@cjwr1ght People swear by Nextcloud, I could never get it to feel like I wasn't in an early-00s ASP back end.
Not #FOSS obviously, but I use my #Synology NAS as a really robust Google Drive replacement.
I was using their Photos app too until I got #immich working as I wanted.
I'll checkout #owncloud though - I'd rather be FOSSing it.