Audio too low in screen share on ipad

HI Please help. It seems that a lot of us are having this problem but there is not a fix?? I read one of the answers the audio is so low is so that we can hear a reply from the participants, but it is so low that you can barely hear it at all. I need to be able to go through musical excerpts with pupils for analyse  so I need to hear it a bit louder than it is a present.

Please can you help? Thank-you!