Or you side load kodi and the right couple of add ons and stream everything.
I have a low cost add on for football, and another paid subscription for hockey, but I watch all my TV shows/movies for basically nothing. I just choose to pay $50 a year for access to premium content server sources that auto VPN my streaming.
It's true that nothing is truly free, if you are looking for true IP television there's free, good quality, and good content, but you can only have 2 of the 3 at once.
PS the 4k firestick is on Black Friday sale for 35, you can't really do better hardware wise at that price point.