i went to chappell roan alone bc my friends didn't know who she was at the time tickets went on sale and i had the time of my life. just think about how the crowd are all fans of the artist ur seeing + other artists that may be in the same sonic universe as that artist. u already have something in common! try to make friends or make side comments while waiting for the artist or in between opening sets~ its so worth it and is not as embarrassing as u may think