Hopefully, Simeone will be able to handle the high expectations around the team, otherwise, the players might feel like they can win a game before even playing it, and that usually not goes the way you want it to go (as a Real Madrid fan, i know this lol).
Don't worry, you're not alone. Barca fans probably did it too last year and unfortunately, their team lost to Liverpool.
Overconfident always cost you.
It's sad thou that you missed that glorious period of rivalry in terms of unbelievable stats, record breakings, Spectacularly consistent non-stop performances from season to season between Messi and Ronaldo. Especially beginning from 2009. Ronaldinho had Just left Barcelona and Messi was now the fan favourite. Real Madrid was just getting a new start after a galactico star-studded Era had come to an end.
La Liga is ranked first in Europe iirc. Maybe because their rivalry is so good and there's no such thing on other leagues. I hope there will be another rivalry like this man. Kinda feels like watching Tsubasa in real life.