Major Internet Providers, such as AT&T and Comcast provide a free app to monitor and control your home internet.

With these apps, you can scan your home for dead zones.  You can also switch off the internet to specific devices on command, or you can set up a Downtime schedule for each day or even specific days.

This means video game consoles, computers, Alexa devices, tablets, as well as internet TV and devices such as FireSticks, Roku, etc.  Any device that uses data, however, will still be able to pull internet from cellular service.