The smart TV I have was purchased quite a few years ago (2012 to be precise) and while initially it didn’t need any help connecting after awhile it became obsolete (I believe the error message was "no longer supported) and couldn’t connect any longer.
I purchased an Amazon firestick which restored and improved the connectivity of my TV. Yay. So I’m watching modern streaming on an “obsolete” TV. Which I have no intention of replacing until it stops working entirely.