MacBook Pro (Retina, 13-inch, early 2015) (macOS Mojave)

Hello, recently for the past two weeks or so my mic hasn't been able to work in group chat and I was wondering if there is any solutions to that. I already changed my input and output in the mac setting to my head sets and I even made sure the league chat is set to my headsets too. I was wondering if it was a bug or something please fix it please...