Here are some diagrams from GoCoax that show how to use MoCA. Make sure your splitters are 5-1675mhz and pay attention to the location of PoE filters in the diagram that applies to you.

Better than Powerline adapter are MoCA adapters using coax it you happen to have that in place.

Here are some diagrams from GoCoax that show how to use it.

Is this internet only without TV cable services? If so you’re golden with fiber as others have already answered.

Fiber providers provide the TV services in different manners. Verizon Fios uses the coax to run the TV signal from the ONT to the STBs. Spectrum now provides a streaming app for their TV delivery.

Here are some diagrams from GoCoax that show how to use MoCA. Be sure that your splitters are 5-1675mhz to support the MoCA frequencies.

Hope this gives you a visual of how this all works.