Significantly lower volume through earpiece on iPhone 11 Pro Max

When I bought my iPhone 11 Pro Max, I heard through receiver just fine. Now, I can only talk on speaker when I am on the phone. It is awful. I have cleaned the earpiece, and there is no damage to it. It simply just isn’t loud enough. My husbands receiver, with the volume up, can be heard two feet away, and I am hoping there is a way to fix this. With so much money I put into this phone, it sure is silly for the earpiece to fail, but is a big pain, as I cannot have privacy with my own phone calls anymore!!

I feel like this is defiantly a glitch, since I’m not the only one its happened to and I am surprised Apple hasn’t came up with a fix to resolve this issue on future models!! I would appreciate some insight on how to restore the volume on my phone, and rather not spend $50 to call Apple, and probably $200 to send it in for repairs, leaving me without a phone, which isn’t possible!

Hoping someone has some advice or tips!