2019 Macbook Air not recognising external displays (direct USC-C or adapter)

My late 2019 MacBook Air is unable to recognise any external displays as monitors. The laptop will charge through USB-C when plugged into a USB-C enabled monitor, peripherals can also be accessed through the standard USB ports. The MacBook will also not connect to Televisions or Monitors when used with a 3rd-party adapter. I have tried everything listed on the Apple Support pages and communicated with Apple through the support chat. This issue is extremely frustrating as I have bought the expensive USB-C Monitor to work form home with. The monitor recognises that the MacBook is plugged in as it will automatically change to the port that it is plugged into, although it then says that there is no signal (a different message to when nothing is plugged in).

Thanks, Joel