@Paulina thank you so much:))
No problem :))
So, as I understand I am completely fine right now? :D
Yes, you are - you can relax :))) As you wrote yourself:
Also she said I'd be fined if someone would call the police for suspicion or sth like thar
So, as the lady told you - you'd get fined if the police was called. First they usually announce through the speaker for the "lost" owner of the baggage to show up and if the owner doesn't show up - then they call the police. And since you showed up and took care of your baggage - there was no need to call the police = no fine.