Laptop not find all Wi-Fi networks just mine?

What should I do? Our Wi-Fi works because our cell phones are all connected and it works too. However, we have the same problem with our television. What can I do?

Maybe you only activated 5Ghz and your device can't?

Otherwise change channels.

Thanks for the answer, but I don't really know my way around now. How do I do that?

Log into the surface of the router and look under WLAN what is activated

Ahh ok thanks for the help.