How to Change DNS Settings on macOS:
1. Open System Settings or System Preferences
2. Select Network from the left-hand menu
3. Choose the active network you are currently using (Wi-Fi or Ethernet)
4. Click the “Details” (or “Advanced”) button in the lower right
5. Switch to the DNS tab
6. (Optional) Remove existing DNS servers, then click the “+” button to add new ones:
8.8.8.8
8.8.4.4 or use Cloudflare DNS:
1.1.1.1
1.0.0.1
7. Click “OK” and then “Apply” to activate the changes