>The manager refused. It seems like she doesn’t want to help me at all. Very bad person.

No. She is a good person. She doesn't want to violate the privacy of all of her valuable clients all because you lost something. The reality is that you don't know if it's a theft, any variety of things could have happened accidentally by someone. Someone could have picked them up in error thinking they were theirs and now they've ditched them in the stairwell of an apartment complex. Move on, the world does not revolve around you.