Here's why:
* Azelf is a legendary Pokémon: Legendary Pokémon are incredibly rare and powerful, and they don't appear in the wild like other Pokémon.
* Specific capture methods: Legendary Pokémon typically have their own unique capture methods within the games, often involving special events, specific locations, or challenging battles.
* Gameplay mechanics: The concept of catching legendary Pokémon through traditional means like Poké Balls is not implemented in the games.
Therefore, if you encounter Azelf in a Pokémon game, you will need to follow the specific instructions and mechanics provided within that game to capture it.