Check that your microphone is plugged in properly
Make sure the correct input device is selected in game settings
Make sure the correct output device is selected in game settings
Unmute your microphone in the game and system settings
Increase microphone and voice chat volume
Check push-to-talk settings and keybinds
Test your microphone in another app
Restart the game
Restart your device
Update the game
Update your audio drivers
Update your operating system
Allow microphone access in system privacy settings
Disable other apps using the microphone
Check your headset or microphone for hardware damage
Reconnect or re-pair Bluetooth headsets
Switch from wireless to wired audio if needed
Verify the game server and voice chat service are working
Clear the game cache if supported
Reinstall the game if the issue continues