Malconfidence 

When one totally acknowledges the utter unreliability for something, as well as either fully accepting or having a lack of care for any potential outcomes. One who acts with malconfidence may be described as carelessly chaotic or ignorantly blissful, for the better or for the worse.

He thought for a moment, closed his eyes, then kicked the ball with full malconfidence

Malconfidence by this handle is not in use November 26, 2021