Screen Sharing Audio AND Speaking SIMULTANEOUSLY

I have been screen sharing an audio file from my MacBook Air and the music is heard clearly...when I speak, however, my voice is very quiet and cannot be heard clearly over the music.  Would using AirPods or a lapel mic help with this?  Is it a zoom issue or a Mac speaker issue?  For those of you who have had success sharing music AND speaking simultaneously, what is your secret?  Thank you!