This was our CL run last season under Xavi -
1st in group, 4W 2L (Porto, Shakhtar, Royal Antwerp)
W vs Napoli
L vs PSG
On paper that is really nothing crazy, I don't know why it's being held up as some achievement on here. The 'progression' in CL was basically all down to the fact we drew a very weak group and a Napoli in terrible form, whereas the year before we competed with Inter and Bayern for qualification.
If Flick got this kind of path, and if Flick had been manager for the 2nd leg against PSG and lost with a 2 goal advantage in the tie, regardless of Araujo's mistake, I would also have blamed him for the loss (there were also tactical reasons why Araujo got caught out and even beyond that, you can still hold a 2 goal lead with 10 men for 60 minutes).
Our CL campaign last season was bare minimum, I wouldn't expect anything less than 1st/qualifying in that group and to go past Napoli, any manager who doesn't do that in a CL campaign has failed in Europe for that season.