How would you create an aspiring athlete/Olympian?

Whether 5e or 5.5e. I have a character concept where she's inspired by Olympians as well as wielding a passion for athletics. Admittedly her character is derived from the Wii Fit Trainer, but I'm trying to take a new approach to character creation where I go off vibes and potential fun instead of pigeon-holing into a concept and losing heart and soul.

"Symone Olympia Williams remembered her childhood memories of watching grand, televised spectacles of athleticism on an international scale, feeling motivated by the numerous competitors appearing to showcase the competency in their respective events. Symone too wanted to be and feel strong, capable, mighty.

She, however, just needed to find her sport. And so, This became her journey of self-discovery, to work hard, and become her greatest self."

I do feel she'd be a Monk + Champion Fighter but I don't have an Olympic event to base her concept on (ideas at the top of my head are gymnastics, swimming, volleyball, Judo, and Taekwondo), unless I make up a fantasy-parkour sport which was my original concept.

In terms of gameplay mechanics, I want to get physical and on the front-line (punching, kicking, grappling, jumping). Feats I thought of were Athlete, Tough, Grappler (if I go the Judo route), Mobile (if gymnast, swimmer or Taekwondo practitioner), or Skill Expert for some reason.