Didnt see the game live but watched it later and if I'm honest I thought that was a better away display than we've seen for a while, admittedly Everton were poor.
I thought mostly we defended more as a unit, there mostly seemed to be cover when required, people were blocking when required and a few times players didnt actually jump out the way of shots
It wasn't fast flowing football and you could see the youngsters were over thinking at times which slowed things down but a decent bit of coaching and some good confidence building work along with regular game time and some work on physicality should help them. I still think Willock needs to go on loan and Nelson too but Saka, ESR and especially Martinelli can be worked on at the club.
Auba I'd sell, he is obviously halfway out the door but I'd keep Laca for another season, especially if Xhaka, Mustafi, Ozil are going elsewhere. Luiz is a conundrum, if we get a couple of CBs then I'd try pushing him up to replace Xhaka in the short term, we lack the range of passing he has from Lucas or Guendozi.
We really need a right back because AMN isnt, and if I'm honest Bellerin just isnt good enough. As I think Marky said we need to replace Ozils position because our major problem when attacking is there is often a huge hole between the back end and the front 3 and everyone we have lacks the turn and run at people attitude.
Arteta has a lot to do in January and more importantly the summer, deals are going to be crucial especially if available funds are limited, as much as we deride the Europa League the extra £20-25M from it is essential going forward with the limited funds he's likely to get.
We really need some new ideas and hopefully Arteta can provide these because we have stagnated badly for too long and it really still does look like a Wenger side at times with the slow midfield and sideways/backwards passing, as said above retention for retentions sake