WLAN as primary WAN interface

[Ady]

Hi there guys.

I would like to know if its possible to enable the internal WLAN as the primary WAN interface.
Have been searching high and low for a solution, but didn't find any.

I have a spare laptop laying around and want to set it up as an OPNsense router with the built-in NICs.
We still under lockdown, so i can't go out to get a USB-to-LAN device.

Any help is highly appreciated.