Door won't unlock/open

[fixkick]

if the locking device is free, to move. the the latch is stuck.
the latch opens the door,
the latch part is seen , dead center above.,
if this part rusts , there, it can be very hard to open the door.
next is the inside view.
see those 2 red X's
those are Pivot points, those levers must be free to move. or its will not open the door. latch.
one locks the latch
and the other is the latch actuator that opens the door. releases door to open.
id bet its rust. invasion, am I right?????