I want to be left alone at work rather than socializing with my coworkers.
Why wouldn't you want to talk to your coworkers? Do you dislike your work?
Not really, but I'm not good at socializing.
There's nothing wrong with finding socializing difficult, but it's something you should try to do with your coworkers. Talking with your coworkers will get them to trust you more and help all of you work together better.
I bet socializing will get in my way more than help.
It may be uncomfortable and difficult for you at first, but with practice you will feel better about talking with people! I think you will be surprised at how much more enjoyable work can be when you are on good terms with your coworkers. It makes the days go faster and it also makes your coworkers more likely to help you.