I have Xfinity internet. They sent me one of their boxes free. I’ve been using Firestick and Roku. You couldn’t pay me to use it, it’s complete junk. Worst UI ever.
It’s worth exactly what you paid for it.
Also never pay the monthly rental fee for the modem/router combo box that they provide. It is complete junk as well, and doesn’t even have the wifi bandwidth to provide the full speed that you pay for.
Instead, buy a quality cable modem and separate router. You’ll only have to pay once, rather than every month, will own the equipment, and will get far higher speeds.