In the end, when I was setting it up, I realized that the only apps I use to connect and listen are using the rest API and I never got that one to work when I was setting it up. I had to bypass rest API endpoints like other poster here and create internal users in navidrome to keep some kind of security.

I would love someone posting up to date guide how to do it properly.

In the end problem was with the Subsonic Api and and the fact that I did not know how to implement subsonic authentication scheme on my proxy (caddy).

https://www.navidrome.org/docs/usage/reverse-proxy/

I am only a solo user that tried similar recovery.

There are several jobs in the admin section, one of them is “migrate the storage template” or something like this. I think that thing might do what you want. I would check that it is set properly depending on what you were using previously and rerun in. https://immich.app/docs/administration/storage-template/

I also wanted to mention that normally Immich dumps its own db into a file backup file somewhere. I forgot where. Check the database dump backup cron job in the settings.