I have a slightly different idea, Haaland is not the key factor that helped Man City win the championship. Erling Haaland is a small player in a big match, he always fails in the final.
EPL is tough because the elite and average club are competitive. Manchester City won the EPL title because Erling Haaland made good use of his goal scoring opportunities and also his teammates played a major role in game victories. Pep Guardiola arrange his strategy and every player played a role in accomplishing their targets, no one was left out. Erling Haaland is a top player and goal machine for Manchester City.
The Premier League is a league that is difficult to track who will stay at the top, because everyone plays very competitively, not only elite teams but mediocre teams also try hard to give the best to their fans, as happened yesterday with Manchester City being quite overwhelmed by facing Arsenal, they had to compete on the last point, even though in the end Man City managed to win the trophy, this proves that the EPL is very difficult to beat.
It cannot be denied that Haaland has a very important role in the Man City squad, he has managed to collect 27 goals this season and also 5 assists, as well as making himself the Premier League's top scorer and making himself a very difficult straiker for opposing defenders and the squad to block Man City also has good potential so it is easy for Pep to target the league trophy, because they have a good squad, and of course the club's good finances make everything feel safe at the moment.
Haaland is just a striker whose task is to receive the ball from his teammates and put the ball into the net. he was stuck when closely followed by opposing defenders. Haaland really won't become a legend. As we have seen it wants to become 'GOAT' like Messi and Ronaldo. Then there won't be any reason that can stop them from scoring. Even nearly half of the opposing players surrounded him. They all found a way to escape the siege and put the ball into the net. That is a key player of the team.
This season we have seen Foden do even better than Haaland, And without Haaland, Manchester City still has many other players who can score like him.