Minecraft Bedrock flickers when starting?

Hello for 2 days I have the problem that Minecraft already when starting after the Mojang logo where everything is red for a short time, then the flickering starts and reinstalling doesn't help

Take a texture pack or a shader and test it with the use of this one.

if that doesn't work, see if you have a graphics card driver update and try again

OK

But Texture Pack doesn't work because the flickering comes before I get to the start screen

Then it is up to the graphics card settings.

Try out an older version of Minecraft