The problem with the Izzy bump is that you shouldn’t try to take that bump unless you’re trained. And eleven is too young to train for that. I just started my daughter in youth soccer. They don’t even allow heading until they reach 10-12 years of age. (Another comment that doesn’t warrant a thread: to become assistant coach I had to watch Heads Up training narrated by Chris Nowinski.)
Honestly, if you’re that young and want to become a professional wrestler, learn the amateur sport. You’ll learn conditioning and basic drills that will help later.