Any Android TV app available or Self hosting script available?
You can use universal IPTV players like IPTV Smarters Pro. It has versions available for Android TV as well.
I also agree with Lucius, the IPTV world is also a little volatile. Finding a reliable and trustworthy service is a tag of war. I think for a new service, an option to subscribe for a month or 2 should also be available.
Imagine subscribing for a full year and then after a month, he service disappears.