Here's why:
* Emulators are single-player: Emulators allow you to play games alone. They do not have the functionality to connect to other players or systems for trading.
* Trading requires hardware: Pokémon trading in FireRed requires two Game Boy Advance systems with a link cable or a wireless adapter.
* No online functionality: VBA does not offer online multiplayer options, which would be necessary for online trading.
Alternatives for trading in FireRed:
* Real hardware: The only way to trade in FireRed is using two actual Game Boy Advance systems and a link cable or wireless adapter.
* Pokémon Bank: If you have a copy of FireRed on a 3DS or a virtual console, you can transfer your Pokémon to Pokémon Bank and then trade them with other players online.
Important Note: Using emulators to play games is legal in many regions but may be subject to copyright laws. Ensure you are using emulators legally in your location.