How come i cant find tornadus anymore?

Tornadus is a Legendary Pokémon that typically appears in specific locations or during certain events in Pokémon games. If you can't find Tornadus, it might be because you have already caught it or it may only be available in specific game versions or during limited-time events. Additionally, some games require specific conditions to be met, such as time of day or weather patterns. Check the game's guides or forums for details on how to encounter Tornadus again.