[make] a mistake

to perform an action that is incorrect or unintended, often resulting in an error or oversight

I accidentally made a mistake in my calculations, resulting in incorrect results.
It's human nature to make mistakes, but learning from them is essential for growth.
She made a mistake by forgetting to save her work, and it was lost when the computer crashed.
The driver made a critical mistake by ignoring the traffic signal, causing an accident.
Admitting when you make a mistake and taking responsibility is a sign of maturity.