AirPod sound quality

The sound quality of my left AirPod is quieter than my right AirPod. I’ve looked at articles online and want to see if there’s a fix without having to purchase new AirPods. I’ve tried sucking the air on the larger screen on the AirPod, resetting my airpods with my iPhone, and cleaning them out but it hasn’t work is there another way I can fix the sound quality without having to buy a new set or repair them from the store?