Pokémon Yellow (Part 9): Big Battle at the Gym, Against Brock's Buddy

Arglefumph tries out Pokémon Yellow, Part 9 of 9. In this part, we get a fourth Pokémon, a Pidgey named Ned Nicker. With four Pokémon, I am able to defeat the Junior Trainer! But mostly, I win because I relied on Nancy, the best Pikachu fighter. Winning lets us fight Brock, who is too strong for us. Like, WAY too strong for us. I think I have to get all my characters up a few levels, before I can even think about winning. Or do I need a new type of Pokémon? I dunno, but this seems like a good stopping spot.