According to Psychology Today:

“A man, looking at a woman for the first time (or a woman looking at a man) will respond to the way that person stands or sits, the way he or she smiles, or is quiet or animated, the way he/she responds to others, and to the way that person is groomed and dressed. That initial impression determines whether that person seems attractive or not. But the odd thing is that what strikes one person as attractive will seem unattractive to someone else. No one way of appearing will seem attractive to everyone. Not only that, what is attractive, or unattractive, to a particular person at a particular time may seem quite the opposite at another time and place. ”

What this means is that looks don’t matter. How pretty or handsome you are is not all that people take into consideration when they are deciding whether or not to approach you. And just because someone doesn’t approach you at any given time, it isn’t an insult to you. Basically, every instance is different. As long as you exude confidence and happiness, then you have done everything possible to put the odds in your favor of making every opportunity count.