How can I remove Unreal engine 4.22?

Hi there,
I just installed Unreal Engine 4.22 in the default C:\Program Files\Epic Games. The problem is, that it does not work, complaining about access denied and so on. So i thought I’d install it somewehere else and clicked on “Remove” in the Epic Games Launcher. I waited and the symbol was gone. But having a look into the installation folder, it’s still there - being 25 GiB in size. Can I simply delete the folder, or what is going wrong there?

Best regards,
Gem