Sometimes it does happens in football that a team will be having the best performance while the other who's the weak side my be lucky with the goals and be winning and in the end of the game what matters the most is the results and not the performance or how well a team did played the game, most times it's usual for the best team to win but then a few times the weak side may actually really prove tough and strong.
Luck is definitely the key used by most of these elite teams in matches, these clubs have no time to waste other than chanelling their energy on important matches. Proving wrong or right, it doesn't make any significance because three points is straightened up to the club that fought so hard to score goals other than the ones that keep full dominance of the game. Football changing faster than we could even understand. We can't comprehend the picture but watching the likes of mediocre teams been lucky against the top sides.
In football, sometimes strong teams are not always lucky. And sometimes we quite often see strong teams dominating possession of the ball during a match but they have difficulty scoring goals and end up losing. Things like this are happening even more frequently this season. This also shows that variations in a club's strategy to beat its opponents are growing. So weak teams often use defensive and attacking strategies which are sometimes effective strategies for beating strong teams. Although that doesn't always happen. But strong teams that cannot adapt to all this will ultimately be eliminated. So it is not surprising if we see a strong team that got a good ranking last season then gets a low ranking this season. And if we look at their game, we will be able to see that they are still good at dominating a match, but they have difficulty scoring goals because their opponents focus on defense and then suddenly attack and make the strong team off guard and concede. At UCL it will be the same. Last season, we could even see that the team that qualified for the semi-finals was dominated by the team that was not the favorite. And it's possible that this season the same thing will happen.
It depends on the condition of the strong club if you really want to see whether the club is lucky or not.
For example, Manchester City is currently very strong but the conditions of the players who are very reliable do not have injury problems or other problems so that a strong club like Manchester City will not be unlucky unless Manchester City condition looks strong but always succeeds with a narrow score because it has problems injured players like Haaland.
We can see other examples such as Real Madrid which currently looks very strong too but winning is always dangerous because it is only with a narrow score, not even in the CL but also domestically Real Madrid is not able to score big because it doesn't have a striker like Manchester City.
There are other examples, such as Bayern Munich, which look strong and has no problems, but its performance is not strong enough, and clubs like Real Madrid and Bayern Munich are sometimes unlucky.
Actually, this season we can also see which clubs will qualify for the semi-finals and there are several candidates, but more precisely we have to see who will qualify for the quarter-finals and in that round we can see for sure which clubs will qualify for the semi-finals.