Dude, read what you just wrote. You're criticizing a character over his inability to immediately master the skills of:
Transferring your mind into a living creature (and controlling said creature)
Time travel
Granted, we're talking about a fantasy series, but I think this makes Bran a more believable character than if he just knew how to harness his new powers immediately.
He’s got a claim. At a home game this season a UGA baseball player was yelling racial slurs at him and the guy was eventually kicked off the team.
You figure you may have to deal with that shit on the road, but not at home.
Not saying it justifies his decision to transfer, but you may as well make your case if you’re trying to play right away.