It can be hard to find a fan specific to a model like that. But usually amazon is a good place to find that stuff,if you search google with the model number,find the part,and use amazon to buy.
first,you can take it apart to make sure the fan isn’t just stuck. I got an old laptop that had a stuck fan. I took it apart and used a screw driver to unstick the fan(no idea how it was stuck),and haven’t had an issue since then. Maybe a drop can do this?
now,you can use a multimeter to measure the voltage at the pins to see if it’s trying to get power,without the fan connected.