Here's why:
* They are event-exclusive: Suicune, Entei, and Raikou were primarily distributed via events during the release of the games. This means they were only available to players who participated in specific events or received them from other players who did.
* No wild encounters: They don't appear in the wild like other Pokemon. There is no specific location you can go to find them.
How to get them:
* Trading: The most common way to obtain these legendary Pokemon is through trading with other players who have them.
* Events: If you have a way to access old event codes or distributions, you might be able to get them. However, this is very unlikely nowadays.
Important Note: If you are looking for these Pokemon, it's best to use legitimate trading methods or find a friend who has them.