Minecraft trap doors problem?

Can someone help me can you prevent what you see in the pictures

I mean you can prevent the trap doors from "switching down"

I don't want to "switch" the trap doors down manually

Hi, put a redstone torch underneath. This will block the trapdoor.

Place a switch at the bottom of the two wooden blocks (the one under the trap doors).

Just put a lever or a redstone torch underneath.

It's not that easy. I think with a command

can I get minecraft