Don't try hard to impress her or push her to like you. Workplace is not a good place to find someone you have a crush on. I suggest to be formal in your work place, and try to avoid her directly when with friends outside the work. Put in your mind that I am going out to have fun, and not to impress her, because otherwise, you will be anxious and she will sense that. Your anxiety and social awkwardness come from your thoughts that you like her and need to impress her.

You said that you think all others are annoyed with you? Why do think that?