I don’t know why this is so tough, but it really, really is.
You need to read screenplays. Lots of them. A whole lot.
One of the things that you’ll figure out is that they aren’t too long on action description. [I used to call it “scene description” …trying to quit the habit. Not easy.]
They tell you, barely, what happens, just barely enough for you to get the picture and then it MOVES ON. No atmosphere much. No novelistic description of what the room looks like. Nothing but the motion and some emotion and that’s it.
Read your stuff out loud and see if you’re telling too much.
Get someone to read it to you and see if you’re telling too much.
But read scripts and see how guys who do it for a living, do it. Then DO EXACTLY WHAT THEY DO. How hard can that be? You want to cash checks like they do? Write like they do.