My faucet in the bathroom makes a loud squealing noise when on low pressure, if I turn it to a higher pressure the sound goes away, it is on both the hot and cold

Noise is caused by vibration. Something's loose in the valve body. Shut the water off and open up the valve. Check for any loose trash in the valve body and turn the water on for a minute to flush out the supplies and valve body. Reassemble and test. Better now? Cheers, Tom