Squeaking noise on the driver side

Hi, my name is tommy I have a 2011 nissan alitma. When I slow down or step on the brakes I hear a squeaking noise on the driver side. I took off the wheel and the brakes to see if it needs new brakes, the brakes and rotors is good. I check the right side also there ok. Do you think that the wheel bearing needs to be grease or replace. Theres no light indicator on.