Umm....Please nerf the gym leader please I can't even damage the last pokemonT_
lol okay, I'll try toning her down! if you're not nuzlocking I recommend catching a larvesta (very goated mon for this fight) and getting a fire gem from the lab guy. You can also get an early flareon by catching an eevee and there's some pretty op mons hidden in some areas if you look around hard enough.