Replacing these qml files won’t work because they are bundled with the library! Instead you can copy all of the qml files into a gnView folder in your qml directory and rename the VPlayGameNetworkView.qml to something like MyGameNetworkView.qml so you can better distinguish them. Then you use instead of VPlayGameNetworkView the MyVPlayGameNetworkView component in your main qml file and can then customize the qml files as you like.
Dont forget to import your custom gamenetworkView folder, so e.g. for the mentioned example usein your main qml file