Here’s where we get super honest. You need a ROM file – that’s the digital copy of the game cartridge. I can’t link you to any because that’d be shady. But, if you already own the physical cartridge, ripping a ROM for personal use is generally considered legal gray area. (Just like making a mixtape for your car in 2005).
4 Ways to Play Pokémon on Your PC - wikiHow
If you don’t own the cartridges, the ethical move is to buy the games on the Nintendo eShop or used on eBay. But hey, I’m not your mom. Just know that downloading ROMs from random sites is like eating gas station sushi – it might work, but you’re rolling the dice on viruses. Stick to well-known forums or trusted private sites if you venture there.