More likely the bearings in your alternator wearing out. Get a new alternator.
You need to lubricate and clean it.
You'd have to define "better", and also exactly what you're seeking - we don't know if you're trying to deal with squealing noise, grinding noise, etc. or you want your car to sound more tuned.
That is the sound of metal on metal. I suggest you immediately take your car to a mechanic and have the brake pads replaced before you cause too much damage to the discs.
Loose or glazed fan belt?
When it is time to change the brakes on your 2001 Mitsubishi Montero, they will make noises. There could be a grinding or squealing noise that you will hear.
No! Something is wrong.
The squealing noise from your car's AC when you turn it on could be due to a worn-out or loose drive belt, which may need to be replaced or adjusted by a mechanic.
Loose or worn belt(s).
Yes, wet brakes can make noise when they are in use due to the water on the brake pads causing friction and potentially creating a squealing or grinding sound.
The squealing noise in your car when the AC is turned on could be due to a worn-out or loose drive belt. The belt may be slipping or not properly tensioned, causing the noise. It is recommended to have a mechanic inspect and possibly replace the drive belt to resolve the issue.
If a car is making a grinding noise in the right back wheel, it could be a sign that a wheel bearing is failing. It is necessary to take the car to a qualified mechanic for repair.
your brake pads are probley wore out so its grinding on your rotor