Definitely ask, they may be feeling the same as you. For me smiling when I meet people shows you are approachable, if you stand there looking scared and shy, even if thats how you feel inside, people can be a bit worried about talking to you in case you ignore them, so try to come across cheery and say hi when in a face to face situation. Please speak to your parents if you are struggling, might be worth going home for a short time to be amongst family. Take care, good luck xx