Why not try fighting someone stronger than you in a Ranked Match? There's a lot you can gain from fighting stronger opponents. Beat 10 of 'em and you'll understand.
Achieved three consecutive victories in Ranked Matches, have you? It appears you are getting a handle on your power. Maintain your modesty, and focus on your training; the path ahead is long.
So you wish to learn Yoga? If that is truly the case, then first you must complete the Character Story with all characters. There is great merit in walking each of their individual paths.