Here's why:
* Mystery Gift is a game feature: It's built into specific Pokémon games on Nintendo consoles like the DS, 3DS, and Switch. It allows you to receive gifts from Nintendo servers or from other players using local wireless connections.
* Mac and PC don't have official Pokémon games: While there are PC emulators for playing older Pokémon games, these emulators are unofficial and won't support the official Mystery Gift feature.
Here's what you *can* do:
* Play official Pokémon games on a Nintendo console: The only way to experience the official Mystery Gift feature is by playing Pokémon games on a Nintendo console.
* Use third-party tools: There are unofficial, community-made tools that might allow you to transfer Pokémon between emulators or to receive Pokémon using a shared file system. These tools can be complex, and their reliability is questionable.
Remember:
* Using unofficial tools can be risky. They may not be secure, and using them could potentially compromise your data.
* Nintendo's official terms of service generally prohibit the use of emulators.
If you're interested in playing Pokémon games, your best bet is to get a Nintendo console and enjoy the official Mystery Gift feature.