Take a distro with a package manager you are familiar with. Debian should do it.

And try out docker it’s really easy to learn and straight forward.

Jellyfin has a well documented docker compose.yml which is just a textfile that points out the facts like used versions, environment and volume paths.

I did a transition from my docker compose tools to a new system in under an hour yesterday. All I had to do was backup the volumes or data paths. Firing up the containers looks like a new install but it’s just downloading the container and everything runs like before without losing any config.