You need to jack the car up.
Remove engine shield... needs bent screwdriver
Then you need a ratchet + socket or spanner to undo the 2 bolts of the pulley.
One bolt loosens the belt, other holds the pulley.
You first loosen one bolt to release belt and then remove the one that holds pulley.
You take new bearing + old pulley to anyone with hydraulic press. I paid 50rs.
Reverse this.
I used car's own jack. But be very careful. It is diy grade