usually yes
but not on this, I was once like that but not for long when it came to movies. Yes usually I had someone to go with around your age, but once my one friend moved, it wasn't like I wasn't going to stop going to the theater. So once I got past what you are going through, it was no big deal.
So just go and stop overthinking. Besides you are always playing on your phone even during the trailers so how can you tell if anyone cares about you there anyway? oh quick answer, they don't care