I have a strategy guide for Pokemon Stadium 2, although it's not as very good as the last one as it was ruined, but every time I try to defeat the Elite 4 there, it gets hard. Last time I had a team composed of at least Misdreavus, Wobbuffet, and Voltorb. Voltorb kept taking a lot of damage from Psychic from a Xatu while I was using Rain Dance wanting to make Thunder always hit; so either Voltorb has a low Special Defense or Xatu has a high Special Attack. I was in my battle against Will and every time he sent out Jynx and I had out Misdreavus she'd always switch out to Girafarig. So I might have wanted to use Pain Split instead of Shadow Ball instead. The person I couldn't defeat was Bruno.
It took me several hours to defeat Team Rocket or even a day and shorter to defeat Jasmine because my attacks were always doing 1/4 damage every single time based on the rental Pokemon I chose because I couldn't rely on Zapdos's Thunder to hit every time. I want to get to the Kanto gyms soon so I can battle those gym leaders and look at their Pokemon.
I also cannot clear the Master Ball Cup on the Poke Cup. So I need help with that one too. It was a while ago but I don't think I was able to defeat Teacher Molly and her Double Team technique. Either my attacks kept missing or the rentals kept taking a lot of damage and those were really long battles.