Leipzig is not a weak team, but Real Madrid has a fairly high mentality when playing in Champions League matches.
It's realistic that Real Madrid's chances of beating Leipzig are quite big, if there isn't a big surprise then Real Madrid will get through the round of 16 without any significant difficulties.
Now the teams have started to carry out evaluations and in the January transfer market the teams will certainly start to improve to become even better, not only Leipzig but Real Madrid too.
I'm not underestimating Leipzig but they are not yet at the same level as Real Madrid.
Real Madrid is indeed the favorite competitor in the UCL league this season. If you have mental problems, don't ask, they already have UCL DNA. However, this season, Real Madrid still has many shortcomings. Apart from the hurricane of injuries facing Madrid, there is also no striker who is hungry for goals. Currently there are rumors circulating about Mbappe but there is no certainty about this.
Seeing Real Madrid's shortcomings, they cannot underestimate their opponents in the round of 16, namely Leipzig. because Leipzig has a good chance of beating Real Madrid and they also did that in the group phase last season when they beat each other. Apart from that, Real Madrid is no longer scary after Benzema and Bale left, Madrid's two best players in the last 10 years, now only Modric and Jude are Real Madrid's mainstays.