Huawei P30 force shutdown?

My display is broken and I can't turn it off because I would have to press something on the display. Is there another way to switch off the phone? The combination of the power button and the loud button unfortunately only leads to a restart… I need an answer quickly because I have to return the device for repair tomorrow, but first have to remove the cards.

With my S9+, this works when I press the power button for a long time. Try it

Thank you, but unfortunately that only leads to a restart…

The solution… Empty the battery.

Always leave it on and do not let it rest until the battery is empty.

But you can't delete anything with it.