LM386L does not amplify the microphone signal
Googling "condenser microphone circuit" shows lots of schematics that have three things yours is missing

As does the image in this Question on biasing a condenser mic


Where does the other side of your mic connect?
What is your biasing?
Where is your DC blocking cap?




I've used the LM386 to power 8Ω woofer speakers, and you will hear audio, once you have your mic set up correctly.