What it means to be a human being?

What's the  meaning of human being?? I have never pondered on a such question that reflects the human race and what it means to be a human being. But I guess everyone knows the fact that what makes us unique and what makes us human. Wht makes us truly unique is our ability to create relationships and connections; this is what which allow us to grow and expand horizon and to accomplish our goals and to be close to other species. This is the most important things what makes us who we are..😊😊😊😊😊😊😊😊....
But the human nature and it's complexity is over my head. I never understand it. Being human or expressing our humanity depends on our highly developed brain and no other creatures were endowed with this natural gift. Rational intelligence,  creativity allow us to create extraordinary tools..and this brain is infrastructure of identities and soul. The glimpse of simplicity and complexity is really mysterious. .
HOMO SAPIENS IS THE UNIQUE CREATURE OF THIS UNIVERSE. Being human is given but keeping our humanity is a choice. You are uniquely you, it's ok for you to be who you are, it's certainly ok for you to be yourself, A LIVING ,BREATHING HUMAN BEINGS WITH FEELINGS.