HOW TO GET LUNALA and SOLGALEO on POKÉMON QUETZAL

 To obtain Cosmog, Cosmoem, Lunala, and Solgaleo on Pokémon Quetzal (v0.8.2)

To get Cosmog and its evolutions in Pokémon Quetzal, you must first complete the Pokémon League and purchase the Faraway Island ticket. This ticket can be bought at the shop next to the Pokémon Center located in the Battle Frontier.

Once you have the ticket, build a team with Decidueye, Incineroar, and Primarina in that exact order, followed by three Psychic-type Pokémon from the Alola region. After setting up your team, select the trainer Elio and travel to Faraway Island. There, you will find a bag — interact with it to encounter Cosmog.

Cosmog evolves into Cosmoem at level 43. Then:

• To evolve Cosmoem into Solgaleo, use a Sun Stone or Shiny Stone.

• To evolve it into Lunala, use a Dusk Stone or Moon Stone.

You can only get one of the two (Solgaleo or Lunala) this way. To obtain the other, go to the Altering Cave — also known in Pokémon Quetzal as the Legendary Cave, located on Route 103.

In this cave, you can re-encounter previously caught legendary Pokémon. Simply catch Cosmog again and repeat the evolution process to get the second form.

You can see how to get it in this video.