Bought a samung TV thinking it was android TV . turns out its Tizen. So installing Jellyfin has been slighlty trickier
enable dev mode https://www.reddit.com/r/Tizen/comments/186s2yf/samsung_tv_developer_mode/
Run a docker command as per instruction here https://github.com/Georift/install-jellyfin-tizen?tab=readme-ov-file
The thing that worked in the end was bulding the jelly-tizen from scratch with my own certificate using tizen studio, the pushing the build manually to the TV whilst it was in dev mode.