Short answer: You cannot download a native Mac version of Blur directly from Steam or the Mac App Store. However, you can play it perfectly on an Apple Silicon (M1/M2/M3) or Intel Mac using CrossOver or Whisky .
In CrossOver, enable “Built-in Wine Audio” or switch to ALSA. Download Blur Game For Mac
Have you tried running Blur on an M3 Max? Let us know your FPS in the comments. Short answer: You cannot download a native Mac