After git push origin main, nothing happens
I believe that you're stuck in an authentication request point. IE, because you're using git over https it needs your github username and password. Because you're on a windows mingw64 system, its unclear what would be prompting for that password. But you should either get a graphical or a textual account login screen, and you're not seeing it. This is what you need to figure out. Or better, switch to using a ssh based login by generating ssh keys and putting the public key in your github account.