It sounds like the red mute icon is causing some issues with your sound and input devices. Try checking your system sound settings to make sure everything is unmuted, and also check your Discord settings to ensure you're not muted in the app. If you're using a keyboard with a mute button, try pressing it again. You can also try restarting your computer or ending any related tasks in the Task Manager to fix any glitches. If the problem persists, consider updating or reinstalling your sound drivers or Discord to resolve the issue.
Good things take time.