I watched the UEFA Europa League final game between Atalanta vs Bayer Leverkusen and in my own personal assessment of the game, I think the German club were too confident in that game ahd that cost them the ultimate prize.
I slightly disagree with your opinion because in my opinion it is quite the opposite.
IMO, it is not Xabi troops who look very confident, but Atalanta who have so much confidence that they can break down the Leverkusen defense and also reduce the mentality of the Leverkusen players.
Do you really understand what Docnaster means?
He said, Leverkusen players are too confident, it makes them to play carelessly in the match. Even Xabi Alonso choose inappropriate starting lineup, they assume to win easily against Atalanta. Be too confident, makes Leverkusen to get a lose in the final.
Sure, Atalanta players also played with a confidence but they didn't become
over confident or
too confident. They played more seriously because they are not the favorite team to win the trophy. Even they didn't win the ball possessions but they can be more focused on the shot attempts. They tried to not waste any opportunity they got in the match.
If someone says Leverkusen looked good in the final match, I slightly disagree because actually Atalanta ball control is far superior with little movement but has fast attacks and Atalanta playing style is like a very experienced team and can always take the ball from Leverkusen.
Who said Leverkusen played good?
Winning the ball possessions will be nothing if it can't result in a goal.
Even if Atalanta didn't win the ball possessions, they could score 3 goals. It means Atalanta can play more effective in the match. TBH, the ball possessions is sometimes not very necessary, the most important thing is to win the match. The focus is to score goal as many as possible, we don't care whether to play a beautiful game or not.