Why did AC Milan advance to 16 in the Champions League, while Juventus were so strong that they were eliminated from the group?

Juventus are out. First of all, they didn't play well in front. In the last crucial battle, I tried to make a comeback. As a result, the environment was very bad (it snowed and the second half was postponed to the next day). Under the snow, the technical role of the players is weakened, which is physical strength and confrontation. Juve are obviously inadequate and out. In fact, in terms of strength, Real Madrid and Juventus are definitely dominant in that group, while Dzenit and Schalke 04 are weaker. Ac Milan is better in the lead, but now it's getting worse. I wonder if Inzaghi can lead Milan out of the predicament? But sometimes, the coach is very important. For example, Dortmund, Arsenal, Naples and Marseille in the death group thought that no one was weak and Marseille was not bad, but they went all out, Marseille lost all six games, while Naples was still out with an unprecedented score of 12, and went home with a little mistake. Dortmund, after this season, suffered a lot of injuries. At one time, the league dropped to fourth place, and klopp was second. In the next few hard games, we won all the games against Wolfsburg, Menxing and Bayern. Their defeat was only a 3-0 defeat to Real Madrid in the first leg of the Champions League (if someone can meet Royce in the first leg, or if Kathy is not strong in the second leg and mkhitaryan is lucky, Real Madrid may be eliminated), but then it will be linked with Real Madrid 2-0 and Bayern 3-0.