You can come to another waiter in a few minutes and tell him to give you some ketchup, and he will give it to you, too. Judging from your tone now, your tone was not good at that time. People who really think of themselves as gods will not be respected, and you should give them due respect.
For example, if you go to a box restaurant to eat a box lunch, a group of people only order one dish, and then all sit there and drink his boiled water and eat his melon seeds. Do you think he is cool? The reason is the same.