"Cheapish" streaming devices have been around for a few years.
It took awhile for me to get one, use it for a few years, and then convince my wife and daughter to "let go" of the cable.
They both did so, and the entire process was remarkably just fine. We do have normal olde fashioned OTA antenna television, which is bringing a lot of content they watch.
Get a Roku, give it a try. Netflix is only about $10 per month. Or Amazon for about $8 per month.
SlingTV, DirectTVNow and YoutubeTV all offer multiple channels. I pay $25 for SlingTV plus Netflix and Amazon.