My wife and I use Immich via Tailscale to avoid the need of any proxying and serious account management. That said, I have yet to fully transition from GP because I have at least one shared album that a few dozen people regularly access. Still need to test setting up a shared album w/ reverse proxy for this one. But then if I want to share another album I'd likely need to set up another proxy...or see if shared albums share a common URL I could use as a catch all. Still need to test.