Lots of us lose hearing as we age, but singers & musos lose a lot more, & not everyone can be like Beethoven hearing the music in their heads. I hope you are able to get effective help.

I've lost a bit of hearing from both ears, not enough (yet) to need remedying. I have a singer friend who doesn't always wear her uncomfortable hearing aids & recently answered a question from a singer across the circle with an unrelated remark - she missed a lot of the action.