If you want to project from desktop PC to laptop one problem is that not all WIFI adapters support this. Seems to be the feature that is needed is WiFi-Direct [1].

At least some RealTek chips support this, for example RTL8192CU. I got it working by ordering cheap (€4.79, delivered) USB-WIFI stick from eBay [2].

[1] https://en.wikipedia.org/wiki/Wi-Fi_Direct [2] https://www.ebay.com/itm/300M-USB-RTL8192CU-Wifi-Adapter-pas...