Sound still comes from the singular airpod (other airpod works fine) but only from one speaker.

I’ve had my airpods (first gen) for 3 years now. I’ve only dropped them a few times but aside from that there’s been no damage to them. My right airpod works completely fine as normal, but my left airpod doesn’t. The sound only comes from one speaker, the smaller one, and it is quieter when worn in the ear as intended, so to hear sound through it properly, i have to wear it at am angle. Is it broken? Is it blown? Can it be fixed? If it can be fixed, how much for? I’m not sure what to do.