I made an unintentional remark, which made my colleagues unhappy.

It's just the workplace. Who cares who? Don't embarrass yourself, and don't care too much about other people's opinions. Be good to yourself, do things right, and abide by the regulations of the unit. There are no other principles. You care too much about other people's feelings and make yourself unhappy. Why are you so troublesome?

In fact, this kind of joke is no big deal. In the future, she will still treat you as a friend, and you will treat her as a friend. It's that simple. There is a saying that there will never be true friendship with colleagues. Although a little too much, it is not unreasonable. Your colleagues should also learn to adapt to workplace rules. It's not just your problem. Whoever doesn't adapt can't live.