To resolve the issue of your M2 Wear not connecting to a Samsung Galaxy S23, follow these comprehensive steps:

1. Check Bluetooth Connection:
- On your Galaxy S23, open the Settings app.
- Navigate to Connected devices > Connection preferences > Bluetooth.
- Ensure that Bluetooth is turned on and check if your M2 Wear is listed among the paired devices.

2. Uninstall and Reinstall the M2 Wear App:
- Go to the Google Play Store and find the M2 Wear app.
- Uninstall the app completely.
- Then, reinstall the M2 Wear app from the Play Store to ensure it is updated and functioning properly.

3. Restart Both Devices:
- Restart your Galaxy S23 by holding down the power button and selecting Restart.
- Similarly, restart your M2 Wear device by following the manufacturer's instructions.

4. Reset Network Settings on Galaxy S23:
- Access the Settings menu.
- Go to General Management > Reset > Reset network settings. This will reset all network settings, including Bluetooth and Wi-Fi, which may help in establishing a fresh connection.

5. Ensure M2 Wear Is in Pairing Mode:
- Make sure your M2 Wear is in pairing mode. This may require pressing a specific button or navigating through its settings, depending on the model.

6. Check for Software Updates:
- On your Galaxy S23, go to Settings > Software update > Download and install.
- Ensure your M2 Wear firmware is also updated to the latest version.

7. Clear Cache and Data of the M2 Wear App:
- Go to Settings > Apps > M2 Wear.
- Tap on Storage > Clear cache and then Clear data.
- Open the M2 Wear app again and attempt to pair your device.

8. Try a Different Phone or Device:
- If all else fails, try connecting the M2 Wear to a different smartphone to determine whether the issue lies with the smartwatch or the Galaxy S23.

If these steps do not resolve the pairing issue, consider consulting the M2 Wear user manual or customer support for further assistance - learn more.

More troubleshooting tips can also be found on community forums or Samsung support pages - learn more.