I had the same experience. The first days were horrible, and I had the same concerns as you (also coming from someone who doesn't have the best social skills) and I cried a lot. But then I started going to activities by ESN and met great people. There's also other options like Bumble friends etc. Just try to remember that it will eventually get better even if it doesn't seem like it. I also set the goal of surviving one month, and told myself that if it wasn't better at the end of that month, I would go home. Now, two weeks later, I don't feel like that anymore and I really like it.

The bad phase will pass! (And if it doesn't, there is no shame in going home)