You can go find a gym that's not in a busy area. They'd be less likely to immediately be taken over by someone who has absurdly strong Pokemon. And if you don't want to walk, you can have someone else drive while you tell the most where to go lol. Driving is too fast though so you'd miss a lot of pokes tops by going…

Al the leaders names are on the wiki page and other websites. Blue and red are females. Blues name is blanche. Red is like candela or something I can't remember.

The leader of team blue is a girl, her name is blanche. So the belt is nothing more than a belt lol

My little brother chose yellow “because it’s the only boy” *eyeroll* so considering there’s probably a lot of young boys playing this game, I'm surprised yellow hasn't gotten more.