How to prevent sound leakage in AirPods 4?

So i bought airpods 4 like a month ago? They were working perfectly not leaking sound but right now i found out that they are leaking sound and it is really loud... every one can hear it even if i have it on lower volume. Is there a way of fixing it or should i return it? Im really disappointed right now now so please help me they werent cheap. They never fell down or anything so idk why its happening

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