My left Airpod is producing heavy static and the right metallic noise

Recently, I got these used/damaged airpods. They're in decent condition, but the left airpod is producing a loud static on transparency mode and the same albeit quieter effect in noise cancellation mode. The right one is alright, but I get a metallic version of this static noise that sounds almost like a wind tunnel. The coverage is long expired and I've tried resetting them, but the only fix so far is to set the preset to "off", albeit this causes a massive reduction in audio quality.