Simply press Ctrl + Alt + Up Arrow simultaneously. This is the universal "return to normal" command.
Ctrl + Windows key + Shift + R → This doesn’t rotate the screen, but (Xbox Game Bar).
This shortcut is dependent on your graphics card driver software (typically Intel, NVIDIA, or AMD). On most modern Windows 11 laptops and desktops, this works by default. However, if the shortcut does nothing, your graphics driver may not have "Hot Key" support enabled, or you may be using a generic Microsoft Basic Display Adapter. If the shortcut fails, use the Settings method below.