I moved from the US to Germany for college, so I was in a similar place as you.
I’m also not familiar with the college culture in Dubai, but I would say the number one thing that worked for me is to “fake it til you make it,” especially as an introvert. The first few weeks, I forced myself to take part in events, eat lunch with large groups of classmates, etc. Over time, everybody will start to settle in and you’ll find people you feel comfortable around.
As for settling into the country and city: take advantage of social networking. Social forums like Facebook groups, Reddit, and even searching up relevant hashtags on Instagram really helped me get to know what the city had to offer.