When something goes wrong we often ask a version of this question: “why did they do that?”
This speaks to intention, that the person planned to screw it up, the “why?” implying that they wanted to make a bad decision. Of course, sabotage might be in play, but usually it’s a given that the person was not motivated to do things poorly.
Errors of all kinds come from a lot of angles. Typically, lack of focus or attention to detail, lack of skill, or poor preparation.
Coaches should understand this and teach focus in addition to skill and strategy, and look to ourselves to ask how we can better prepare our people.