I've been troubled with that today after doing a fresh install of Mint 20.
Do 4 things.
get the latest winetricks version
use winetricks to make sure that DXVK is installed
use winetricks to make sure that DotNet 4 is installed ( dotnet40)
use winecfg to set the windows version to win7
Then it should run
In Wine 6.0 Stable I find that the launcher is often black but you can still type in your username and password and authentication code.
I know the launcher is effectively a simple web browser in the way it displays info so if anyone has a fix for the black launcher then please let us know
This should help: custom wine mono build
Now... The game freezes at main menu. What should I do with it?