These teams can certainly do well in European competitions, because they are not exactly teams that play little football, on the contrary they enjoy themselves and make others have fun, so I am confident that they can have a great run, even if there are some things to fix, but with time you will see that they will do it, they just have to understand from the first matches what is wrong.
The Champions League always has a unique story every season, as teams from various leagues gather here to compete, relying on their established skills. And in this regard, I always have more faith in the teams in the Premier League, La Liga, and Serie A than in other leagues, even though last season PSG surprised everyone by winning their first Champions League. But this season, I'm not even sure PSG will win another trophy in the Champions League, even though PSG still has the ability to fight like last season.