Dashboard vents trim

Hello.

I will write this in english as best i can. German or english is not my language.
I need help with my astra.
I have problem with trim on dashboard. On left (drivers ) side it does not stay in place. I take whole trim out and tried again. But it just wont stay in place. I even tried replacement part but its the same.
Only problem is on the left side.
Am i doing it wrong? Which side goes in first? Front i guess. Then you just press down side facing towards driver right?
How to solve this?

So first insert the part facing driver and then clip "front" side facing windshield?

Anyone knows why it wont clip into place? No matter how hard i press down it wont stay in.

Really?
What sort of damage? Broken?
So no fix until whole dash comes out?
I removed trim because of rattles. Whole car rattles. Every part of interior. One day nothing. Next day like is falling apart.

Thank you. I will try to post more pictures.

It's hard to see. I will try to take a look from outside. Maybe try to take few pictures.
I will post them here.