Removing a single voice from a church choir

Hello

I have a recording (L/R channels only, but is really mono) of a choir where one of the singers left their microphone on, overwhelming the rest of the choir. I would like to bring this singer’s voice down to the level of the rest of the choir if possible. Is this possible in Audacity 3.5.1? Is it possible with a plug-in? If so, what plug-in should I install? (Note: there was a similar post to this from 2015. I’m not sure if there’s something new out there these days like AI.)

Thanks!

Removing this issue from a source recording is near impossible in post production. Maybe a hard earned lesson in always monitoring/checking source audio before ending a recording session. This error should have been picked up at the recording session.