Simplest answer is we are being way over cautious. And honestly after the last two seasons, we should be.
And I think the lack of fitness (or just competitive game time) plus the brutal transition of side (>6 players who have never really been played together, all together in highly competitive league for first time), plus RDZ tactics has us looking a bit off.
Game Saturday had moments of good and bad, Tonali (as you called him out), was poor for long stretches, then had an amazing rub/carry through the middle.
Personally Savio, Marmoush, Tonali, Fernandes, do not worry me in terms of come good, the defense does a little bit.