I can't lock my driver side door. the key cylinder is not staying in it's place.
it is little bit loosen when i put my key in.
i can't see anything actually but when i touch them with my hands that rod is not moving when key is turning.
so key is turning along

i don't know what to do since i don't know what they are supposed to look like. should i buy an used door that whole thing?

 

see if you can go to a junk yard and look at the internalls or google a pic

 

Either the rod came loose or the plastic clip that holds the rod is broken.Either way, it should be a simple/cheap fix.