Constant bleep while recording

Hi alltogether,
I am new on this forum and would like ask you for help. I try to record chorus recordings from youtobe. My problem: there is a constant underlying bleep which hihgly disturbs listening especially when the choir sings “quietly”.
my Audacity version 2.2.2. with Windows 10

I tried all different settings but I cannot get rid of this bleep, nothing worked out yet.
What do you recommend me to do?
Thank you for sharing your experience!
Hayo

Audacity’s Spectral edit tool worth a try.