What is the term for the literary device when someone uses understatement, such as saying "I did all right" after scoring three goals?

The term for the literary device used when someone expresses something in a way that downplays the reality of the situation is understatement. In the example provided, saying "I did all right" after scoring three goals is a clear instance of understatement because the speaker is minimizing a significant achievement. This rhetorical technique highlights a contrast between what is stated and the actual situation, creating a more nuanced or humorous effect. Understatement often serves to emphasize the truth by presenting it in a less intense or dramatic manner than it objectively is.