Ah, so you feel like you aren't earning your wins.
Well, you definitely won't get better with Tager if you switch out whenever you reach a challenge. So it's good that you don't want to just go to Hazama for that, or you'll never figure out how to handle those situations. It's kind of like how when some people fight me, and I start downloading their tactics, they are afraid of that so they start switching characters. But that doesn't help them beat an opponent that is figuring them out in that matchup, it just puts the problem off.