Some people have been helped by Surface Laptop 3: Intel(R) Wifi 6 AX201 160MHz can't - Microsoft Community
(You indicate this didn't help but try it one more time.)
Another temporary fix that has helped some:
Try going into the UEFI and disabling the WiFi and Bluetooth. Wait 30 second, then re-enable and restart.
- Shut down your Surface.
- Press and hold the volume-up button on your Surface and at the same time, press and release the power button.
- When you see the Surface logo, release the volume-up button.
The UEFI menu will display within a few seconds.