I think that in this El Clasico match, Barcelona has a better chance than Real Madrid because they are playing at home and Barcelona are reportedly getting an injection of energy in this El Clasico match because Lewandowski has recovered from the injury he suffered. Raphinha is also reported to have recovered from injury so the return of several key players will make them even stronger in this match.
El Classico is a very big match and with many star players in two teams, they can make difference, decide the match with their magnificent moments. Such moments can come from any of those star players so it's unpredictable who will make such moments and what team will win the El Classico.
In quality, they are quite balancing so their player performances in the match, from personal mistakes to magnificent moments, and also referee and VAR team will all together decide the El Classico result.
On the Real Madrid side, of course they will try to find full points in this match to be able to maintain their ranking as leaders of the standings. In the previous match, Real Madrid failed to get full points after being drawn by Sevilla. And statistically, in the 5 meetings between the two, Barcelona was able to achieve 4 wins and Real Madrid 1 win. So I prefer Barcelona to be the winner in this match.
Real Madrid looks to have more problems and they are depending too much on Jude Bellingham to have goals. His goal scoring streak in La Liga just stopped last week but he continues to score for Real Madrid in Champions League. What a young world-class midfielder!
I've never imagined that Jude Bellingham can score goals, many goals, match by match like he is doing in this season. Real Madrid will need goals from other players to beat Barcelona as their opponent will try to close any space for Jude Bellingham and the English midfielder will hardly have chance to make dangerous shots.