Wondering if Apple Support's online article (link below) can help:
Learn what to do: If your left or right AirPod isn't working - Apple Support
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If more help is needed:
Your iPhone (or Mac or device) may need updating to the latest compatible iOS version.
Eg: For iPhone: About iOS 16 Updates - Apple Support (says iOS 16.5 is the latest)
(The firmware on the AirPods updates automatically when paired).
Make sure nothing (a speck of dirt or wax) is blocking the microphone and speaker
How to clean your AirPods, AirPods Pro, AirPods Max, and EarPods - Apple Support
How to check / change the microphone settings / left / right:
Change settings for AirPods Pro (all generations) - Apple Support
Resource:
AirPods User Guide - Apple Support
More support . info. if needed:
AirPods Support Website:
Find all the topics, resources, and contact options you need for your AirPods....
AirPods Support - Official Apple Support
All the best :-)