WHERE ARE POKEMON GAMES FOR VBA!?

I just downloaded a vba on my computer because i wanted to play pokemon games (got grounded) but i cant find any of the games to download!! I would like to find gold, silver, crystal,ruby.sapphire,emerald, leafgreen, firered. I would also like to find generation 1 red green blue and yellow but i know that might be really hard. so please HELP!!!!!!!! thank you.