Hey, I did the same. It’s not as bad as it seems. Get yourself a domain name from cloudflare and use it. I got mine for $10 a year. Then just installed cloudflare on my Debian server and all that (I’m sure you know the rest) then made users on my admin jellyfin dashboard and started sending people their usernames and passwords. The only difference for them is now they would need to enter the server URL on the first page of whatever they use then username and password. Good thing these jellyfin clients have the of entering the server in your face with their “connect to server” button. Let me know if you have any questions.