Turn off laptop screen when external monitor is connected?

I've already selected my Samsung screen as the main screen, but I always have to turn off the screen of the laptop manually with Windows + P. Than just show the second screen.

Does anyone know how to set the laptop screen to stay off?

There are in the settings the option the laptop cover can be closed without the pc shuts down

give times in the settings close or something similar

Normally, Nitebooks have a key on the keypad to turn off the TFT.

Mostly with the F keys (top row).