There is no doubt that Haaland is one of the best strikers in the Premier League if not the best because he score plenty goals that people never expect in his first season in the Premier League, but this season, he has played some matches without scoring goals due to the absence of KDB in Manchester City's midfield.
Yes, there isn't much good balls to leap on and with De Bruyne absence opponent's main focus has shifted towards Haaland and he is usually in tight spaces now. I think I expected that pretty much when KDB got injured. I think if someone steps up and start feeding in some good passes or crosses then Haaland can again be on a scoring spree. It just needs a bit of better understanding and coordination.