Questions about example sentences with, and the definition and usage of "Ouvrard"

A: × Rémi Ouvrard has broken the world record, the hight of the standing on the top of a hot ballon.
✓ Rémi Ouvrard broke the world record for reaching the highest height to stand on top of a hot air balloon.

× His ballon reached 4,016 meters high and he stood on the top of the ballon.
✓ His balloon measured 4,016 meters above sea level when he stood on top of it.

× This challenge was aim for donations for the intractable disease researches.
✓ This challenge was created in order to gain donations for intractable disease researches.

× The French man selfied himself on the top with his heart content.
✓ With a content heart, the French man took a selfie from the top of his perch.