Pokemon Insurgence Won't Load On My Desktop on Mac

I’m on MacOS Big Sur, so I selected that option in the guide for that version. I made sure that my terminal is an admin and I put in the command. Everything loaded and after a few minutes, the entire six-step process was complete. The website here told me to reboot the computer. I did, but Insurgence didn’t appear on the desktop like it said it would. What’s the problem?