Howdy yall!

Just got a 2013 a8L 3.0.

Came with some faults and i'm looking to see what i can fix/ knock out myself before bringing it in. I'm pretty decent DIYer but its been a few years since i've really dived into a car. I have searched but would love some help with what ya'll think would be the culprit for these codes below.

Thank you ahead of time!

Basic OBD2:
P0306 (Pending) - Cylinder 6 Misfire Detected
P0420 (Permanent) (Pending) (Confirmed) - Catalyst System Efficiency Below Threshold Bank 1
Freeze frame :
Calculated load: 22.3 %
Coolant temperature: 167 °F
Short term fuel trim (bank 1): -4.7 %
Short term fuel trim (bank 2): -7 %
Short term fuel trim (bank 3): -4.7 %
Short term fuel trim (bank 4): -7 %
Long term fuel trim (bank 1): 0 %
Long term fuel trim (bank 2): 0 %
Long term fuel trim (bank 3): 0 %
Long term fuel trim (bank 4): 0 %
Engine rpm: 1823 RPM
Vehicle speed: 69 mph
Ignition timing advance for cylinder 1: 18 °
Absolute throttle position: 18.4 %
Time since engine start: 181 sec.
Fuel rail pressure: 611 PSI
Commanded evaporative purge: 100 %
Ambient air pressure: 14 PSI
Battery voltage as seen by the engine ECU: 13.2 V
Absolute engine load: 45.1 %
Commanded equivalence ratio (Fuel system): 1
Relative throttle position: 11.4 %
Outside temperature: 84 °F
Absolute throttle position B: 18.8 %
Absolute throttle position D: 26.7 %
Absolute throttle position E: 27 %
Commanded throttle actuator position: 11.8 %

P0430 (Permanent) (Confirmed) - Catalyst System Efficiency Below Threshold Bank 2

Engine:
13272 - Catalyst System,Bank1: Efficiency Below Threshold
Freeze frame :
Priority: 2
Malfunction frequency counter: 6
Unlearning counter: 255
Odometer reading: 152257.6 miles
Date: 12 Jul 2024 06:03:54 PM
Engine rpm: 1823 RPM
Normed load value: 22.4 %
Vehicle speed: 69 mph
Coolant temperature: 167 °F
Intake air temperature: 102 °F
Ambient air pressure: 13.92 PSI
Voltage terminal 30: 13.202 V

13273 - Catalyst System, Bank2: Efficiency Below Threshold
Freeze frame :
Priority: 2
Malfunction frequency counter: 40
Unlearning counter: 255
Odometer reading: 152265.1 miles
Date: 14 Jul 2024 10:08:10 PM
Engine rpm: 1410 RPM
Normed load value: 43.1 %
Vehicle speed: 53.4 mph
Coolant temperature: 199 °F
Intake air temperature: 117 °F
Ambient air pressure: 13.78 PSI
Voltage terminal 30: 13.304 V

18198 - Coolant pump: Mechanical malfunction
Freeze frame :
Priority: 6
Malfunction frequency counter: 1
Unlearning counter: 255
Odometer reading: 152272.6 miles
Date: 14 Jul 2024 11:28:26 PM
Engine rpm: 1643 RPM
Normed load value: 30.6 %
Vehicle speed: 62.1 mph
Coolant temperature: 199 °F
Intake air temperature: 104 °F
Ambient air pressure: 14.07 PSI
Voltage terminal 30: 13.507 V

06355 - Cyl.6: Misfire Detected
Freeze frame :
Priority: 2
Malfunction frequency counter: 1
Unlearning counter: 255
Odometer reading: 154017.4 miles
Date: 03 Oct 2024 06:29:19 PM
Engine rpm: 3211 RPM
Normed load value: 93.3 %
Vehicle speed: 38.5 mph
Coolant temperature: 187 °F
Intake air temperature: 122 °F
Ambient air pressure: 14.21 PSI
Voltage terminal 30: 12.898 V

07948 - Hide cylinder
Freeze frame :
Priority: 2
Malfunction frequency counter: 1
Unlearning counter: 255
Odometer reading: 154017.4 miles
Date: 03 Oct 2024 06:29:20 PM
Engine rpm: 3337 RPM
Normed load value: 77.6 %
Vehicle speed: 39.8 mph
Coolant temperature: 187 °F
Intake air temperature: 122 °F
Ambient air pressure: 14.21 PSI
Voltage terminal 30: 13.101 V

08902 - Coolant pump for charge pressure cooler: Electrical malfunction in load circuit
Freeze frame :
Priority: 2
Malfunction frequency counter: 24
Unlearning counter: 255
Odometer reading: 152711.9 miles
Date: 05 Aug 2024 05:05:25 PM
Engine rpm: 674 RPM
Normed load value: 20.4 %
Vehicle speed: 0 mph
Coolant temperature: 142 °F
Intake air temperature: 140 °F
Ambient air pressure: 13.92 PSI
Voltage terminal 30: 12.999 V


ABS:
00719 - Tire pressure warning
Freeze frame :
Priority: 6
Malfunction frequency counter: 21
Unlearning counter: 135
Odometer reading: 153581.2 miles
Date: 25 Sep 2024 07:49:28 AM


Heater & air conditioning:
00137 - Right side window defroster door motor: upper limit exceeded
Freeze frame :
Priority: 3
Malfunction frequency counter: 59
Unlearning counter: 116
Odometer reading: 153765.1 miles
Date: 28 Sep 2024 02:05:45 PM


Body/convenience system:
03637 - Roof electronics ctrl module fcn limit due to excess temp
Freeze frame :
Priority: 6
Malfunction frequency counter: 4
Unlearning counter: 154
Odometer reading: 153994.4 miles
Date: 02 Oct 2024 01:27:06 PM


Adaptive cruise control:
10496 - Function restriction
12032 - Adaptive cruise control sensor: misadjusted
Freeze frame :
Priority: 2
Malfunction frequency counter: 254
Unlearning counter: 116
Odometer reading: 147774.5 miles
Date: 20 Jan 2024 11:37:32 AM

88064 - Adaptive cruise control sensor: misadjusted
Freeze frame :
Priority: 2
Malfunction frequency counter: 1
Unlearning counter: 209
Odometer reading: 147774.5 miles
Date: 20 Jan 2024 11:37:32 AM

88320 - Adaptive cruise control sensor: misadjusted
Freeze frame :
Priority: 2
Malfunction frequency counter: 1
Unlearning counter: 209
Odometer reading: 147774.5 miles
Date: 20 Jan 2024 11:37:32 AM

93440 - Function limitation due to received malfunction value
Freeze frame :
Priority: 6
Malfunction frequency counter: 254
Unlearning counter: 116
Odometer reading: 147774.5 miles
Date: 20 Jan 2024 11:37:31 AM


Image processing:
00161 - Video line for image processing: Signal malfunction
Freeze frame :
Priority: 3
Malfunction frequency counter: 143
Unlearning counter: 116
Odometer reading: 153287.9 miles
Date: 29 Aug 2024 04:27:39 PM


Onboard Camera:
00001 - Windshield heater for directional stabilization assistance: Open circuit/short circuit to B+
Freeze frame :
Priority: 3
Malfunction frequency counter: 61
Unlearning counter: 156
Odometer reading: 152421.7 miles
Date: 19 Jul 2024 11:54:14 AM