With the difficult situation that Madrid is currently experiencing, their performance in the El Classico match will not be perfect, but I still believe that Ancelotti already has a plan to cover up the problems in his team, and the players will also appear all out because we know this match is full of prestige. El Classico is very profitable if they can get 3 points to catch up with the leaders of the standings. On the other hand, Barcelona, who are currently in good form, of course 3 points are also their main target. I don't think there will be a draw in the match, both Real Madrid and Barcelona have the opportunity to emerge as winners at the end of the match.
Now there is an international break and to get to the el clasico match there are 2 matches that Real Madrid must go through, first they will play in LA Liga against Celta Vigo, after that they will face the club they defeated in last season's final, Borussia Dortmund. We have to see first what will happen in those 2 matches, because something unexpected could happen again.
Likewise with Barcelona, they will face Sevilla and Bayern Munich before they actually meet their eternal rivals, Real Madrid. Just like Real Madrid, we also have to see how they are in those 2 matches, because unwanted things could happen.