Wi-Fi no internet on iPhone, iPad and MAcbook

There is probably a connection problem from the router to the internet provider. Perhaps one of these articles will help;

Recommended settings for Wi-Fi routers and access points - Apple Support

If your Mac doesn't connect to the Internet over Wi-Fi - Apple Support

If worse comes to worse, with most carrier plans, you can share the cellular data connection of your iPhone or iPad (Wi-Fi + Cellular) with your Mac. Learn how to set up Personal Hotspot.

If it is all 3 there is a problem with the router’s connection to the Internet.