my car key doesn’t lock or unlock passenger door. I need a new latch?

What is your question?

It’s a loud cream when opening and when pulling the handle I have to tug pretty hard to open it, which then it’ll be a loud sound as if the latch didn’t come off entirely, there will be an opening by the side of the door if only closed slightly, has to be slammed and key just turns loosely when i try to use it to unlock the door.

What makes this problem better or worse?

it’s worse when the weather is cold

How long has your 2007 Chevrolet Cobalt had this problem?

3 years