Do you want to take the initiative to greet foreigners?

Friend, you are lucky to see your problem. I'm on the side of America. In fact, foreigners will fight you even if you don't say hello. In their eyes, there is no idea that everyone doesn't know how to speak or say hello suddenly. You can boldly tell them that you want to chat with them and learn their language. They will be very happy. They will be interested in your English. Trust me.