How do I find my lost airpod

To be successful in finding your lost AirPods, the following must be true:

• Find My iPhone must have been enabled BEFORE they were lost.
• The AirPods are within range of your devices (iOS or macOS).
• They are not in their charging case.
• They are still charged.
• The AirPods have not been reset.

You can't add it as this point, you are either out of range, it is out of power or it has been reset.