Which wall cracks are problematic and which are not?

then involve the property management and raise the issue of the expert at the next owners' meeting.

then involve the property management and bring up the topic of the expert at the next owners' meeting.

I thought so too.

Just normal settlement cracks.
Next time you paint, they will all be gone.

Quite normal settlement cracks.
They will all be gone after the next coat of paint.

Yes, that is exactly what it is about. All settlement cracks, or can these cause problems later on.
An expert can determine that. I am aware of that.
I have read here that cracks under 0.2mm are classified as hairline cracks, which are considered harmless only in the plaster and not in the brick.
Cracks wider than 0.2mm should supposedly be examined more closely because the brick underneath might be cracked.
Have I understood this correctly here in the forum?
That would help me sort the cracks.

These cracks can be found in every new building after a certain period of time. They are neither avoidable nor a problem. No expert is needed for this.