This year's Champions League has become quite competitive. Bayern Munich and Manchester City have very strong squads. And they are consistently playing well. In addition, Arsenal, Real Madrid, Barcelona, Real Sociedad Atlético Madrid and Inter Milan have performed very well. The four La Liga teams Barcelona, Real Madrid, Atletico Madrid and Sociedad have played well and will surely qualify for the knockout rounds. City, Munich and Madrid are considered to be the favorites for this year's title. However the road to qualifying for the Champions League final will not be easy for them.
But a lot of things can happen until these games for the knockout round finally begin. For teams like Real Madrid and Bayern Munich it is incredibly important that the key players stay healthy. It would really change a lot for one of those teams if for example Harry Kane gets injured or Bellingham gets injured. I think Manchester City, due to having so many midfielders with offensive potential, would be most able to have a plan in case Haaland is injured. For Bayern Munich it would be tough and for Real Madrid Bellingham is also irreplaceable.
You are right, Manchester City is dependent on Haaland, Munich is dependent on Kane's performance and Madrid is now dependent on Bellingham's performance. And if these players suffer injuries in the knockout round, it will become much more difficult for the teams to qualify for the quarter finals. Because almost every team in the knockout round will be strong. So it will be much more difficult to win without a full strength squad. However, if clubs are not too unlucky their key players will not suffer injuries. Because Kane, Bellingham and Haaland are all fit enough.
Although Bayan Munich does not have injury problems, Manchester City has injury problems because of this, Manchester City is now very dependent on Haaland. But I wouldn't say that Real Madrid only depends on Jude Bellingham, although this midfielder regularly scores goals for Real Madrid, but along with him, there are several other star players in attacking positions who play important roles for Real Madrid. Kevin De Bruyne is one of Manchester City's key players but has been sidelined since the start of the season due to injury, meaning that the onus has fallen on Haaland in his absence. Haaland's performance seems to be slightly weaker than last season, the only reason being Kevin De Bruyne's injury. Kevin De Bruyne is great at assisting other players in the team to score goals which is why everyone else in the team gets goals. With Kevin De Bruyne back from injury, Manchester City will be a stronger team and Haaland will be more attacking.