Who said anything about winning or not?
It seems pretty clear to me that his approach to the players has been to encourage them by reminding them of how "good" they are.
That approach looks to have led some of them to believe that they can just turn up and win.
I'd guess that this week will involve reminding them about doing the ugly things like running and tackling.
Some of the team selections certainly didn't help on Saturday and some were glaringly a hinderance, but that's all they should have been. The players should still be doing the basics. As NMC said in another thread, none of the out of position players were completely alien to their roles and nor were the other players unaccustomed to seeing them there.
Saturday was a very clear case of collective responsibility. All must improve, starting tomorrow.