>>50360111Not enough type diversification - you can sweep all these teams with one type every time.
Have a look at Pokémon Stadium's teams for inspiration. Those Gym Leaders diversify their types and it make it super-challenging to get through.
>Bugsy using Kabutops to counter fire/rock spammers.>Whitney using Espeon (Eevee evo, so makes sense) to counter fighting spammers.>Pryce using Jynx to counter Fighting spammers.>Brock using Ninetails and Steelix to counter grass/water spammers.>Surge using Lanturn to counter ground spammers.>Blaine using an Electrode and a Dugtrio to counter water/rock spammers.