How to Mingle in Public Without Being Weird

Mingling isn't just for parties or social events that you could do this throughout the day in public and as you said I think Americans have this like a fear they like to keep to ourselves yeah. So how do you overcome that fear and how do you mingle in public without it being weird? It really takes as being aware of your surroundings and instead of looking and you're putting your phone away and just looking at people and being curious, then the rest kind of follows.