There’s plenty of services like this that people use a firestick to connect too.
My friend uses one but I forget the name of it. You can find them online but people usually buy a package of say 20 connections and then sell them to friends and family. I’ll try and remember what to search for and come back.
IPTV is the name of the pirated cable TV streams. Personally, I consider commercialized piracy to be a bit distasteful compared to the free and open source route, and I have the know how to self host my own streaming service.
Although it's not piracy, another free option to consider for live TV, if you're within range of TV broadcasters, is a digital TV antenna. I'm looking into that since not only is it free and legal, it's also the best picture quality, not compressed like IPTV (legit or pirated) or even cable.