Stuck in a Glass Elevator

I'm not that great of a people person. Some people would deny this because I can be really loud when I am around my friends. But as soon as I am in front of a stranger, like someone my mom or my grandma knows, and I don't say a thing and I'm quiet. This also happens around strangers, and people I don't know, unless I'm also with my friends. That is sort of why these interview assignments in my J10. class has been a little difficult. I feel really awkward talking to people I don't know, or don't know well. I am definitely trying to do my best for this assignment and I really hope I can do good on this.