i have upgrade os after completing the upgrade my screen flikker

Experiencing screen flickering after a software update on your MacBook Pro can be frustrating, but there are several steps you can take to troubleshoot and potentially resolve the issue:

1. **Restart Your MacBook Pro:** Sometimes, a simple restart can help resolve minor software glitches that may be causing the screen flickering.

2. **Check for Updates:** Ensure that your MacBook Pro is running the latest version of macOS Ventura. Apple often releases updates to address bugs and issues. Check for any pending updates and install them.

3. **Check Display Settings:**

- Go to Apple menu > System Preferences > Displays.

- Check the display settings and resolution to make sure they're properly configured.

- Try changing the display resolution to see if it affects the flickering.

4. **Check for Third-Party Apps:** Some third-party apps might not be fully compatible with the latest macOS update. Try quitting or uninstalling recently installed apps to see if the flickering stops.

5. **Reset NVRAM/PRAM:**

- Shut down your MacBook Pro.

- Turn it on and immediately press and hold Option + Command + P + R keys.

- Keep holding until you hear the startup chime twice, then release the keys.

- Your MacBook Pro will restart. Check if the flickering persists.

6. **Safe Mode:**

- Restart your MacBook Pro and hold down the Shift key until the Apple logo appears.

- This will boot your computer into Safe Mode, which can help identify if the flickering is caused by third-party software.

7. **Check for Hardware Issues:**

- Make sure the screen flickering is not caused by a hardware issue. Test your MacBook Pro on an external monitor to see if the issue occurs there as well. If it doesn't, it could indicate a problem with the MacBook Pro's internal display.

8. **Contact Apple Support:**

If none of the above steps resolve the issue, it's a good idea to contact Apple Support for further assistance. They can provide more specific guidance based on your MacBook Pro's configuration and the issue you're facing.

Remember that troubleshooting technical issues can vary based on your specific hardware and software configuration. If the screen flickering is persistent and affecting your ability to use your MacBook Pro, don't hesitate to seek professional assistance from Apple Support or an authorized service provider.