Looking for a place to start. Just picked up this 2004 Avalon with 10 stored codes. I hate throwing parts at a car but also horrible at diagnosing lol. Below is a list of the codes shown. If anyone has any advice about one of the codes causing any of the others, please let me know! The ignition coil for cylinder 6 has been changed and still throwing code.

PO456 - EVAP System Leak Detected (very small leak)

PO442 - EVAP System Leak Detected (small leak)

PO420 - Catalyst System Efficiency Below Threshold Bank 1

PO356 - Ignition Coil F Primary Control Circuit/Open

PO354 - Ignition Coil D Primary Control Circuit/Open

PO330 - Knock/Combustion Vibration Sensor 2 Circuit Bank 2

PO325 - Knock/Combustion Vibration Sensor 1 Circuit Bank 1 or Single Sensor

PO306 - Cylinder 6 Misfire Detected

PO304 - Cylinder 4 Misfire Detected

PO300 - Random/Multiple Cylinder Misfire Detected

Thanks everyone! Like I said just need a place to start and I’m overwhelmed by all the codes.