jettyjet400

So the timing belt looks good an no signs of any wear and tear how could I check if it’s one of the pullies are bad with out it starting?

So yesterday my car literally shut off on its own and it read low oil pressure on the dash, I tried to start the car, but makes a really bad grinding sound around one of the pullies, I have oil in motor. It every time I try starting it makes a really bad and unsettling sound not sure what it could be any ideas? Could the motor have sized on me?? What can I do to fix or check the problem without trying to start car