Sites like Reddit (specifically the r/roms megathread) often have curated lists of safe, verified sources.
If you're interested in playing Pokémon X and Y, there are several alternatives to consider. Purchasing a physical copy of the game or downloading it from the Nintendo eShop is the most straightforward way to play. Additionally, some emulators allow you to play Pokémon X and Y on a computer or mobile device without downloading a ROM. pokemon x and y rom download