“I made a mistake.”

when to use it: Nobody’s perfect. Good bosses admit it and even apologize when they screw up.
how to use it? Hopefully, you aren’t making so many mistakes that you’re constantly apologizing. But when you do mess things up, admit it immediately and whole-heartedly. Doing this already puts you in the upper echelon of inspiring, relatable leaders, as many never apologize at all.

Source: Rick Conlow, “10 Phrases Good Managers Always Say”