There's a social spectrum. There are varying levels of asocial- one being demisocial. Demisocial people want interaction, but normally with a close few people that they have a strong bond with. Put someone who is on the asocial side in a large group and they'll get overstimulated and overwhelmed. It takes time to figure out your social tolerance and what pushes you over the edge. Some people will encourage asocial people to desensitize themselves by forcing themselves into social situations, but that can be extremely unhealthy for them and lead to burnout. There's nothing wrong with anyone who doesn't like huge social settings... Some people just don't like accommodating others so they make it a you problem. Finding your people can be hard and lonely, but it's far more fulfilling when you do.