My Apple EarPods main speaker doesn’t work

So recently I bought wired Apple EarPods, everything was working just fine. After some time the main speaker stopped working, the sound comes only from the one on the side. It happens in both EarPods, I tried cleaning them with a toothbrush, with a brush and with an ear stick (I think that’s how it’s called) and none of it worked. And now I have to put the volume level to the maximum just so I can hear something