No internet connection at the installation

My PC is a ryzen 1700, 16 gb ram ddr4, motherboard Asus A320M-A

I am trying to install a Success' href='/2020/12/install-macos-catalina-on-supported-pc.html'>Catalina.

I've trying to use a different version of realteck 8111 and no Success .

Anyone could help me please????

Author: @felipemartins210