Help & troubleshooting for channels on your Roku device, including adding/removing channels, logging in to, authenticating, or activating a channel, channel-specific playback issues, assistance contacting channel publishers to report issues, and adjusting channel-specific settings.
Man, if I can't get Spectrum, what is available on ROKU?
If you want cable you can watch through Roku, you'd need to see what else is available in your area. If you're wanting a cable replacement/alternative, then there are several services, including live streaming services available here: https://channelstore.roku.com/browse/cable-alternative
You seem to be a newer streamer, and not a cord cutter, since you subscribe to cable for TV and not just for Internet service. And, of course, if that's what you want, then that's the way for you to go. But, many of us old school cord cutters don't need paid live streaming services.
Some of us get local channels via antenna. Some of us add Tablo, Air TV or something similar to the network to watch antenna on multiple Roku devices.
Some use Locast for local channels. You didn't say where in Florida, but Locast is available in Orlando, Tampa, West Palm Beach, and Miami areas.
If you want live local channels via streaming and antenna or Locast aren't available or feasible, you may want to use https://suppose.tv to find a streaming service that carries what you want. Enter your ZIP Code in the top left and your streaming device(s) in the top right, and then select the channels you want.
There are many options available for streamers, including cord cutting of which I am a long-time proponenet. However, I'm only listing that option so you are aware of the option. You should, of course, use whatever TV method suits you.
DBDukes http://www.dbdukes.com/ Roku Community Streaming Expert
Help others find this answer and click "Accept as Solution." Note: I am not a Roku employee.