According to the official World Athletics Technical Rules , athletes in field events like the Long Jump or Shot Put are typically given three initial attempts to secure a spot in the finals.
In the High Jump and Pole Vault, a "3rd attempt" at a specific height is the literal end of the road. Miss it, and you're out of the competition. Why It Matters for Fans Download WCh 3rd att pdf
Statistical leaders often find their "best" mark on their final attempt when the adrenaline is highest. According to the official World Athletics Technical Rules