I think people are sleeping on Atletico Madrid this season, they have a solid squad and a great coach, they could make a deep run in the UCL, especially if they can get their defense clicking properly.
It's not that many people don't pay attention, but most people still think that a team like Atletico Madrid is still mentally inferior when competing in the Champions League because there are many teams that have the mentality to win the Champions League. In addition, Atletico Madrid will also face Real Madrid, who are generally still strong in the Champions League every season, so this will still be a serious obstacle for Atletico Madrid this season.
Real Madrid teams that always appear different when in the Champions League. It's not a mystery. The way to stop them from far away in this tournament must be done from the start as it was rounded 16.
For Atletico Madrid, meeting with Real Madrid in the Champions League is a serious challenge even though in La Liga it might still be predicted they are able to beat Real Madrid, but this is the Champions League.