Hello, I have a problem with the handle on the balcony door, namely it does not close, it remains in the position as shown in the picture below.

I have to press the door in the lower part, only then can I push the handle to the lower position.

I have a question whether and in which exact picture can I adjust the door, should I replace the handle and after the problem? Alternatively, if and what element is lubrication sufficient to smoothly close the door handle?
Top door closing part:
Painting No. 1

Middle door lock:
Painting No. 2

Locking At the door handle:
Painting No. 3

Bottom door lock:
Painting No. 4

Bottom corner door lock:
Painting No. 5

I am asking for advice from professionals in this field because I do not want to damage the door and I do not know anything about it. I read a few articles about the door and found out that it is adjustable with screws. Therefore, I am asking for a hint on which image should I start the adjustment, or whether a complete replacement of the handle will solve the problem.

I have to press the door in the lower part, only then can I push the handle to the lower position.

I have a question whether and in which exact picture can I adjust the door, should I replace the handle and after the problem? Alternatively, if and what element is lubrication sufficient to smoothly close the door handle?
Top door closing part:
Painting No. 1

Middle door lock:
Painting No. 2

Locking At the door handle:
Painting No. 3

Bottom door lock:
Painting No. 4

Bottom corner door lock:
Painting No. 5

I am asking for advice from professionals in this field because I do not want to damage the door and I do not know anything about it. I read a few articles about the door and found out that it is adjustable with screws. Therefore, I am asking for a hint on which image should I start the adjustment, or whether a complete replacement of the handle will solve the problem.