Just because someone goes to a place full of people, doesn't mean they interact a lot. Last year I isolated myself from my friends and family to focus on college and my two jobs in order to get into university and whilst yes, I communicated with classmates and teachers, that was for a limited time and after that I was on my own. Needless to say, working 16+ hours along with college and other work without really socializing resulting in me having a mental breakdown. And as for weekends and holidays... well I had to fit those job hours in somewhere. I had no time for socializing then either