Adobe no longer offers Photoshop CS6 for sale or official download. It was discontinued years ago, and its activation servers have been shut down. Even if you find a CS6 installer, you cannot activate it legally.
I understand you're looking for a report on downloading Photoshop CS6 for Mac. However, I should clarify a few important points: photoshop cs6 download mac
Would you like guidance on any of the modern alternatives instead? Adobe no longer offers Photoshop CS6 for sale