My lost air pod which was present in findMy is not listed now
Had locked the air pod when it went missing. Looks like it was stolen. Not able to see it on the findMy page now
Question marked as
It is likely the missing AirPod has used all its battery charge and is no longer communicating to report its position. Find My only shows the last known location for about 1 day after devices which go silent.
Find your lost AirPods - Apple Support
Considering you think the missing AirPod was stolen, I have to suggest you need to consider the probability you will be able to recover it. It might be easier and cheaper long term to accept the facts and buy a replacement for the missing AirPod.