Even if you have a strong team like Real Madrid still, you will have some problems with this team. We know Real Madrid is a good rea mad they got palyers like Mbappe and Vini jr there and this can help Real Madrid to easily get good results in the great tournaments like the Champions League but the fact about Real Madrid is Vini is not in the good form and Mbappe is still far from his good performance we saw from him before in PSG.
This can be a reason to say there is even the chance for Real Madrid to lose the title of the Champions League to another team like Inter Milan in this season.
There is no team that has no problem. Sure, Real Madrid also has a problem, they still can't optimize their performance since Mbappe joined the team. In theory, Real Madrid will be stronger when they have a strong attacker like Mbappe. But in fact, Mbappe can't contribute much to help Real Madrid. He even makes Ancelotti to change some matters (tactics, formation, and lineup). Real Madrid also becomes inconsistent in some matches, they got 3 draws in La Liga and got 1 lose in UCL. This is not a good sign for Real Madrid performance this season. Even if Real Madrid is still the king of UCL, it looks like to be a hard season for Real Madrid. If there is no change in Real Madrid performance, I also favor other teams to win UCL trophy. Juventus, Dortmund, Liverpool, Leverkusen, Man City, and Inter Milan look to have a more promising chance to join the race for UCL trophy.