Voice chat isn't working

My voice chat isn’t working at all. My blue indicator that I’m talking shows up but I can’t hear other players. I’ve tried everything. I’ve reset my computer, I’ve checked my communication devices, I’ve scrolled through all the options that are voice chat related, but nothing. I even tried clicking the mute button on some players and it doesn’t even change to un-mute or have any visual or audio feedback when i press the mute button. Its been going on since I got the MCC and all I really want is that classic Halo Experience where everyone is trash talking in the lobby.

I’m playing on PC btw.