Increase the microphone input gain in your device or audio interface settings
Raise the mic volume in your operating system sound settings
Turn up the input level in your recording, streaming, or calling app
Move the microphone closer to your mouth
Speak directly into the microphone
Use a microphone with higher sensitivity
Enable microphone boost if your device has it
Check that the correct input device is selected
Remove or reduce any noise suppression or automatic gain control settings if they are lowering your voice
Use an external audio interface or preamp
Replace weak batteries if using a wireless microphone
Check cables and connections for damage or looseness
Update or reinstall the microphone drivers
Use a pop filter and proper mic placement to improve usable volume
Record in a quieter environment so your voice can be set louder without excess noise