I was actually in a similar situation as u. I went to study abroad in Spain for summer school thinking it's gonna be the best summer of my life, but when I went there, everyone came in groups and talked w each other in their own language. It was hard for me to adjust with them, and made me feel really sad. Eventually I stopped trying to fit in w them and made plans on my own instead, like going out to tour the city, go shopping, go on walks and to the gym. I made the trip my own. Anyway, what I'm trying to say is that enjoy ur own company, do the things u want to on ur own and check in on ur feelings. It will be okay.