While a native, high-quality DMG download for Counter-Strike 1.6 is harder to find for modern macOS versions, using Porting Kit or browser-based versions offers the best performance for today's Apple hardware.
A "wrapper" (like Wineskin or Crossover) that allows the Windows executable to run on macOS. Clean Files: No intrusive "non-Steam" ads or malware. counter strike 16 mac dmg download high quality
While the macOS version on Steam is older, it is the safest "high quality" source. If you are on an older OS (Mojave or earlier), this is the best route. While a native, high-quality DMG download for Counter-Strike