How to Get Gallade in 'Pokémon GO'

Gallade is one of the final evolutions of Ralts in Pokémon GO — but not every Ralts will become a Gallade. Unfortunately, this Pokémon is a bit more tricky to obtain and has a few prerequisites to its evolution.

While Gallade is evolved from Kirlia, players cannot catch a Kirlia in the wild and evolve it to become Gallade; instead, a wild Kirlia will evolve into Gardevoir, Ralts’ other final evolution. Only a male Ralts will evolve into this Pokémon as well, adding more specifics to your search.

Source: https://www.distractify.com/p/how-to-get-gallade-pokemon-go