Wiktionary
goof up
vb. 1 (context slang English) To make a mistake. 2 (context transitive slang English) To introduce problems to or damage through incompetence.
Usage examples of "goof up".
These are unconsciously motivated interactions with others in which we may goof up and/or get put-down, thus confirming our childhood beliefs that we are inferior and undeserving.
When he'd goof up, he'd hear about it from the fans, and it would get under his skin, and his play would go downhill.
Something must have snapped inside my head for me to goof up like that.