How Do I Play Pokemon On My Mac Computer How Can I Get A GBA Emulater For My Mac?

How can I get a GBA emulater for my mac? - how do i play pokemon on my mac computer

I love pokemon and I want to play in the team, some of the older games. But first I want some experiences that emulates what happens if you get viruses, and if it really is a good thing. I know it is illegal. That does not bother me hahah