Yes, 100%.
Being "shy" is a symptom of not being accepted by your peers in your formative years.
Look I am shy to so I will just say it about myself. I am fucked up in a big way. Interacting with people SHOULD be 60-95% of someone's life.
NOW with that said, its totally normal to be "shy" around complete strangers, which is most of the people we interact with on a daily basis. So it's not actually as bad as it seems on the surface.