The absence of Rodri, Stones, and Diaz from the squad of Manchester City is affecting the formation of the team because it's just like the center-back and defensive midfielder of Manchester City which the three mentioned players occupy is empty, no right player of Manchester City has been up to fill in the vacuum in the team, which the three injured players have occupied for so long, which is now affecting the team formation from gaining three points easily in Manchester City matches in Premier League and Champions League.
Sure but not only the absence of Rodri but also the absence of KDB matters the pass from nowhere to haaland is now missing and haaland not getting more space or opportunity to score and most of his defenders injured e.g akanji,dias, Ake and stones affected the team but still the inexperience of the young stars he is now using.
When he has a full squad he never gives the young stars playing time, only those that will be sent to loan and return that it online teams like Barcelona, Chelsea and more.