My left airpod is much quieter than the right one and I have done all of the things listed above to try to fix it.

If your left or right AirPod isn't working - Apple Support

tnmc0108 Said:

"My left airpod is much quieter than the right one and I have done all of the things listed above to try to fix it."

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Verify the AirPods Balance:

Two Methods:

A. On the iPhone, itself:

1. Go to: Settings
2. Tap: General
3. Tap: Accessibility
4. Scroll Down: to Hearing
5. Adjust: the audio volume balance

B. On an App:

Note that some apps have their own settings for volume. So, be certain balance on the app is as desired.