Sorry. I'm mixing us both up. I meant "docker inspect nginxproxymanager". 192.168.48.3 is definitely not typical for a docker IP, but let's go with that for the port forwarding rule.
Jellyfin 10.10.0 (Docker)
Ubuntu 24.04 LTS
Intel i3 12100
Intel Arc A380
OS drive - SK Hynix P41 1TB
Storage
3x WD Red Pro 6TB CMR in RAIDZ1 (JF Library)
It's fine, and I was exhausted last night, haha. Despite reinstalling and starting from the beginning, I am still unable to find any success. No luck again. Thanks for the help. Any information, I will gladly try my best to follow.
I have to get to bed and won't be on until tomorrow night (US Eastern). The video tutorial has a lot of, IMO, unnecessary stuff. It sounds like they are trying to fiddling around with private IPs in Cloudflare to try to keep traffic local instead of going out to the Internet only to come back to your home. But this is resolved by enabling a feature called "NAT loopback" or "NAT hairpin" in your router (most support this, but some don't).
Jellyfin 10.10.0 (Docker)
Ubuntu 24.04 LTS
Intel i3 12100
Intel Arc A380
OS drive - SK Hynix P41 1TB
Storage
3x WD Red Pro 6TB CMR in RAIDZ1 (JF Library)