Replacing AndroidTV box with Linux server

Hi! I've installed Stremio on the ISP-provided AndroidTV "decoder" and it allows my family to watch shows while still having access to live TV. However, I am not aware of any option to watch live sports ("Ligue 1" in France) with as good an interface as Stremio, so my father has to watch it on his computer by finding a site that's streaming it and has the least invasive adblock-bypassing ads.

I wanted to know whether something like Stremio exists that I can set a Linux server to boot directly into and control with a remote (so we no longer depend on the ISP-provided box) and would allow watching the free live TV provided by our ISP, as well as something similar to Stremio's interface for pirating shows/movies, and also has sports streaming. I know torrent streaming doesn't help the ecosystem much, but I'm not sure where else to look. I installed Kodi and played around with it, but I couldn't get Elementum to work (and it looks much more complicated for my family to use than Stremio). Thanks in advance!