What should I do if I am used as cannon fodder in the workplace?

There's no need to feel guilty or explain it to your face when you make an unintentional mistake. If unreasonable people are bad people, they want to be good people. You should know your boss's mobile phone number (I don't know to ask others), and send him a short message: the content is roughly as follows: XX, the last thing was because of my fault, and you were scolded. I am very sorry. From the bottom of my heart, I still admire you. I hope you don't care. Still friends in the future.

Now that I have resigned, in fact, such things can be coordinated by my own ability. As a man and a colleague, there is a glass of wine on the table. You can say anything and you won't leave. I don't want to do it myself, so I can't help it.