Just pulling the power out!
In my house there are 4 computers, 2 tvs, a printer, xbox, 4 phones, 5 tablets, 2 kindles, firestick, 2 Alexas and chromecast all on the wifi network so no surprise it has issues.
Don't confuse problems with the WiFi with problems with the broadband. The broadband connection to your home will be fine but the problem is with the WiFi service the router is providing. I end up rebooting my router a few times a week to keep it working OK.