So I use this Tapu Koko for catching Pokémon:
Item: Tapunium Z
If you use the Z Move, the opposing Pokémon will lose 75% of its health. You can whittle it down even further with Nature’s Madness (opposing Pokémon loses half of its HP) then use Flase Swipe and Thunder Wave and throw some balls. It seems so good, but why do YouTubers use like Focus Sash item swap and other complicated stuff?