Consistency is what we need. Your examples reference scattered instances over two years. It's too sporadic.
Name me one single player that has had consistency in this trainwreck of a season?!?!
Vicario has had bagful of errors.
Bentancur has been half-invisible in many 2nd half of the season games.
Kulusevski right now in shocking form.
Solanke losing the scoring boots in 2nd half of the season.
Bergval took time to get up to speed (which is totally understandable given age and all).
and so on and so on and so on. Lot of players have missed too much of the season (VDV; Odobert etc) so we cannot make that kind of assessment.
Porro was running on fumes and looked poor around Dec-Jan.
Spence has been always good, but was frozen out of the squad for half season (and in full honesty is now as well).
Literally NOT A SINGLE PLAYER would deserve to stay with us if we look at things like that.
So is that really the fact - that all of the players from GK to ST are not good enough? Or should we maybe change the coach?
I am honestly bit shocked how many people are willing to jump on Sarrs back, suggest he is useless, offers nothing and we should offload him. I mean HOW EXACTLY do you expect him to improve when he gets nothing from the management? Do we seriously expect player to become better based on YT videos ?!? On EPL level??? Yes, Bergvall has upped his level, but that has been down to mainly physical side of things. I am convinced that one more season of this coaching, and he would regress too. And then we'd see calls to sell him for 20 mil also.