If you see nothing, your adapter is either not connected or not recognized. NetworkManager and other services can block the interface.
sudo apt update sudo apt install realtek-rtl88xxau-dkms Then reboot. Kali Linux Fern Wifi Cracker No Wireless Interface Was Found
sudo fern-wifi-cracker Or if using the GUI launcher, make sure it runs as root. If you still get the error, your internal card likely won’t work. Recommended adapters (chipset must be supported): If you see nothing, your adapter is either