Jio (Reliance Jio) does not provide official M3U playlists for JioTV. JioTV is a proprietary app with authentication, DRM protection, and geo-restrictions. The app verifies your Jio SIM, IP address, and subscription status before allowing access to its 800+ live TV channels.
If you come across tutorials, they typically follow these steps (all of which are unstable): M3u File For Jio Tv
from the URL.