How do I completely delete the save memory cards created by the Gamecube Dolphin emulator?

[Eldresss]

When I try to delete the gamecube virtual memory card in the files, they reappear when I start Retroarch again, I have a problem starting Monkey Ball 2, when I went through the phase of selecting a memory card when starting the game I selected to use a memory card by accident (I prefer quick save) and when that happened Card C was created in the files, and now when it starts the Card C in the game the screen goes black, and I want to see if that is the reason why the game does not start, maybe if I select not to use a save memory card the game will load this time. I have a theory that this is related to Steam Cloud,

[Fili]

Disable Steam Cloud, otherwise the files will be downloaded. You can enable it back again another time and it'll ask you which save file do you want to upload later.