P0306 Fault Code: Cylinder 6 Misfire in 2013 Chevrolet Malibu LTZ

I'm experiencing a misfire in cylinder 6 on my 2013 Chevrolet Malibu LTZ. The check engine light has come on, and the diagnostic tool shows fault code P0306. This code indicates a misfire in cylinder 6, which could be caused by issues such as faulty spark plugs, worn ignition coils, clogged fuel injectors, or problems with the oxygen sensor. I've already checked the spark plug and found it to be dirty but not damaged. The vehicle runs roughly under load, especially during acceleration. I'm looking for advice on how to diagnose and fix this issue effectively while keeping in mind that this is a 2013 Malibu LTZ model with specific engine characteristics.