it's a team game not just individuals, Haaland is indeed a player of above average quality and Manchester City have been very lucky to sign him this season but that doesn't mean because they have Haaland this season they will be able to win the title easily.
it's been several seasons Manchester City have always been favorites to win the UCL title but they never got it, this is the most prestigious stage on the blue continent of course the tension is very high and many big teams are giving everything on this stage, therefore there will be no team who will win it easily and many other teams also have the same chance of winning the UCL this season.
It's not Manchester City lucky to signs him but in my opinion he was lucky to choose Manchester City as his current club because if he still in Dortmund or other clubs i am not sure he will reach to high level performance and in this team there are plenty of players who had good quality to pass so Haaland can playing with more comfortable because of their service and from season to season Manchester City always be the favourite for race title but seems they weren't lucky enough because always failed at knock out stage and on 2021 they almost get the trophy but they defeated Chelsea