Mic monitoring and audio settings not working

You need to turn mic monitoring in audio settings

Have you tried lowering your mic monitoring? That may help, my mic use to echo really bad. Till I lowered my mic monitoring on the audio settings.

Go into your device audio settings and turn off Mic monitoring. That should stop the buzzing.

Hope this helps

go to your audio settings where you will see mic monitoring turn it all the way to the laeft which is basically off

Try to lower your white noise in your background to a minimum and then in fortnite settings under audio lower your mic monitoring