Do you have a "smart tv?"

If so, download the apps for all of the free tv you can find (Pluto, Plex, Tubi, Freevee, etc...).

If you don't have a smart tv, you'll need a router and a ROKU or similar device to hook to your TV. Once you have that, then you can download the free tv apps.
But even with all of the free tv, you'll probably want at least one pay app for live streaming news and new tv shows. I have Hulu. Not perfect, but it's enough for me. My sister recently hooked up Hulu and she got 1 year for a dollar a month (or something ridiculously cheap). If you don't like it after a year, try something different...