Every time I make a fool of myself at work, everyone laughs happily. So everyone hates me?

No, you think too much. Anyone who makes a fool of himself will laugh, but it will be all right if he smiles, because in this case, you should not emphasize yourself too much. You are just too sensitive, not good for yourself, easy to walk into a dead end, and you will be in a bad mood. To sum up, you are still too sensitive, a little inferior and too concerned about other people's opinions. You are not that important to others.