Jellyfin on a plain OS is a good choice. I do it on a TV for friends and family (with a browser set for fullscreen). The Jellyfin app enables much control via other connected devices. People like it, and maintenance is ok (1 day per year, more if I want to add content more often).

I wanted to tinker with Proxmox so the Jellyfin server is virtualized, but running it directly on the host/hypervisor OS is probably a better choice in order to transcode with the GPU. GPU passthrough in Proxmox is not intuutive and I deemed it not worth the troubles for my use case.

I have a network storage shared with the different VMs and containers, an airsonic server, a podcast downloader (airsonic being not so good at that), a DNS, Kiwix, Calibre, Komga for use with Tachiyomi (lots of work to set up good content) and a few social games (pictionary, posio, codenames etc).