I understand that coronavirus often leads to pneumonia. is it known as to whether the pneumonia is typically bacterial or viral?

Both: Coronavirus itself causes pneumonia (which is viral, obviously) and can predispose to bacterial pneumonia as well. Just like influenza.

Viral initially : The virus is in many ways similar to influenza initially. The effect on the body is influenced by factors such as age and other conditions that may be present. The best answer is seek medical care early.