You could host something like IPTVnator on your Proxmox server: https://github.com/4gray/iptvnator

Is freemediaheckyeah an IPTV service? Plex or Jellyfin can manage IPTV streams. Plex needs additional software (e.g., xTeVe) to take an m3u playlist and convert it into a tuner.

https://blog.iptvinsider.com/watch-iptv-on-plex/

https://jellyfin.org/docs/general/server/live-tv/setup-guide/

Biblically accurate controller