What did you think last season? That Real Madrid had a better chance than this season? Real Madrid was dominated almost every single game in the champions league and yet they won it in the end. They do have the experience and the efficiency to win big games even when they look like losing it. Vinicius Junior has very well developed and the team is not in its best shape, but in a good enough shape to win big games. They have also beaten Barcelona in La Liga. I know that they lost some games that they should have never lost, but that doesn't count when you are up against Liverpool in the champions league. By the way it is also the same situation for Liverpool, they are even worse off in the premier league.
liverpool vs madrid will be an exciting match because currently, Liverpool's performance is not in the best condition in the EPL, but I agree with what you said that Liverpool is a team that is difficult to predict. the team that will win is a team that has a strong winning mentality and madrid looks like it will come out victorious in this 1st leg.
Of course, there are no weak opponents, but it should not be forgotten that Napoli played against very strong teams in Serie A. In these matches, they only lost 1 defeat. That's why this matchup will be a very difficult test for Eintracht Frankfurt. I think Napoli will go to the next round comfortably because the players are playing at a high level this year.
So far in the Champions League, only Liverpool has been able to beat Napoli, so Napoli's performance can still be said to be very stable and good, facing Frankfurt shouldn't be a big problem for Napoli, because Frankfurt is not the favorite team to win and their performances in their local league also not so good.