To reset your WiFi router, locate the small reset button (usually at the back). Press and hold it for about 10–15 seconds using a paperclip or pin until the lights blink or the router restarts. This will return the device to factory settings, so you’ll need to reconfigure your network name and password afterward.
Keep in mind, resetting the router won’t always solve deeper network is... https://techiefixers.com/services/network-tuning-wi-fi-fixes/