Usage patterns
〈事〉に果敢に挑むto boldly take on (a challenge/task)
He boldly took on the difficult job.
果敢に立ち向かうto bravely confront (a difficulty)
Knowing the danger, they bravely confronted it.
果敢な〈事〉a bold, daring (act/attempt)
Her bold challenge saved the team.