Huawei P20 lite auto screen turning does not work?

I bought a Huawei P20 lite, however, the automatic turning of the screen does not work, although I have certainly activated it. I have already tried System Restart and Clear Cache, but it still does not work. Maybe someone has a tip? Respectively knows jmd a way to check whether the sensor is intact as on the PC in the device manager?

In the app, nothing is displayed for orientation or rotation vector. It works, however, because GPS, WLAN, proximity and light go.