Here is a good spot to start. If you are rural, then options are really limited.
https://broadbandmap.fcc.gov/home
Remember that home internet/TV from a mobile carrier makes you a second class citizen... and DSL has different grades and speeds. Important to make sure you're computer can actually keep up with the internet speeds you're paying for if the PC is older.
I was fortunate to have fiber show up from a local ISP. I pay a bit extra for the increase speed and up/down parity, but I claim that because I'm a remote employee.
I used a wifi Hotspot off of an AT&T Tower for a while, but you have to know what your consumption is.
For "TV" streaming, it can get a little pricey if you want networks plus sports and you often have to bundle several to get to what you want...(Paramount + Hulu + Peacock... etc) I just go with my Amazon Prime and do without.. though I need to get an aerial up at some point to see what I might get from Broadcast TV.
