Speaking of the second leg of the Copa del Rey, theoretically, Barcelona is superior because they are playing at Camp Nou, their own headquarters. plus, Barcelona has won three meetings with wins in three different competitions. at least, they have a stronger motivational drive to win the second leg match later.
Barcelona will start the match with one goal advantage, which could make them play the same way they played in the first leg. However, I think Real Madrid will be more aggressive in this match as they have nothing to lose. They have already lost La Liga this season, and their Champions league match will commence one week after the match against Barcelona. Moreover, Ancelotti is under the pressure of the resignation, so he could make a lot of changes to the lineup, because he will be the first person blamed in any new defeat. On the other hand, Barcelona might suffer many injuries, especially in the defensive line, according to some news. Anyway, on the opposition of most people, I expect a reaction from Real Madrid in this match, as kicking Barcelona would heavily mean that Real Madrid can win the title for this season, because whatever the other semi final resulted, Real Madrid have great advantage over them.