Patience is key to any warrior's training. Fight in network battles 30 times using the standby function. The longer you wait, the greater the joy will be when you finally get picked.
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.
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.