my daughter 2years 7 months is always crying when she is in any function or event. She says let's go and don't want to say there. please help how can I make her not to cry and play with friend's

A. Your child has a stranger anxiety and the child does not like how many people around the music is so loud and wedding these days the DJ is playing they get very annoyed with it so they could be multiple reasons behind it with a child common for kids in this age