Whenever you get the chance be the first person to say “hi” even if it’s to random stranger. Your gesture of just smiling and/or saying “hi” can go a long way.
Find the courage to say “hi” first especially when you really want to talk to that person. Many people miss out on opportunities because they couldn’t find the courage to say “hi”. Instead they overthink the situation & lose the courage to talk to someone.
Be yourself. Walk up to them & say “hi”.