c6 Audi 4.2 low compression issues

[audinoob.c6.8p]

my 4.2 v8 is misfiring badly and has absolutely no power, it barely moves around the drive way and when it does it stalls most of the times so unless I rev in in neutral and put in reverse or drive just to move it up and down my drive way.

so I ran a compression test here are the results
Bank 1
(cylinder 1 = 20psi)
(cylinder 2 = 30psi)
(cylinder 3 = 20psi)
(cylinder 4 = 25psi)
Bank 2
(cylinder 5 =85psi)
(cylinder 6 = 100psi)
(cylinder 7 = 110 psi)
(cylinder 8 = 110psi)

my DTC codes are mostly misfires and o2 codes(I have cat delete) but one that isn't normal is (P0341 camshaft position sensor A circuit range / performance bank 1 or single sensor)

can someone help me with the diagnoses? can it be bad timing? maybe faulty camshaft adjuster?? what would cause low compression on all of the cylinders? if it was something like headgasket it would be one or 2 or maybe even 3 cylinders but 4 is unlikely i think and i have no signs of a bad head gasket my oil is clean and coolant level is normal.

what is your opinion on this issue? if it helps my car is also pops and banks on idle(specially on coldstarts) which it shouldn't do normally

[Avantly]

What year(i.e. direct injected? or no)? How many miles/kilometers on the odometer? Any issues with clattering before this? Since all of your low compression issues are on one bank, and those numbers are very, very low, it would seem very likely that you have a timing issue. First thing I'd do is check for bent valves. If not bent... I think you can replace the cam phasers in C6 4.2 without pulling the engine? I have never done it, I only have one C6 4.2 and they were replaced before I got it. On C5 it is doable with the engine in the car but is a bit of a pain and with the engine in the car you can't replace the lower chain guide that you really should be replacing once in the cars lifespan.