My assumption is that if Real Madrid advances to the last 16 of course no one will be able to stop their progress again, Real Madrid squad is very strong, even Brahim Diaz managed to show his skill in this match, I was so amazed by his appearance.
Real Madrid won and got advantage before a second match, and they have good chance to move to last 16 phase. They are always one of strongest and best candidates for Champions League title, but they only won 15 Champions League titles. This information means Real Madrid can not win the title in all seasons when they go to knock out phase. There is chance for other clubs to stop Real Madrid and win the title, but Real Madrid are one of biggest and hardest opponents to beat.
https://en.wikipedia.org/wiki/UEFA_Champions_LeagueReal Madrid won this time. You were talking about Diaz, and now look who also scored. Bellingham's double strikes actually helped Real Madrid to win the match. I am an Argentine fan, and I am kind of disappointed to hear what Sergio Aguero said before the match. He said he would cut off his balls if Real Madrid could beat Man City.
Brahim Diaz many times shown his value for Real Madrid as a substitution, and Kun Aguero said it loudly but I am sure he didn't keep up his promise. He only said it to support players in Manchester City and hoped that they will win this match, in fact they lost it.