if some key players like Benzema don't play, Barca may get a chance to get at least 1 point from Madrid. it's not bad because Barca's performance is also improving at the moment.
If Benzema is absent, then Real Madrid's home match, but Barcelona's chances of winning this match are high. Barcelona is now consistent. Real Madrid, on the other hand, is a strong team though. However, they rely heavily on Benzema to win the match. He helped the team win by scoring in the required time. Real Madrid will not be able to fill this gap if he is absent in today's match.
as a fan of real madrid i think that for today's game real madrid will not win, as you said and i will also say the same thing that real madrid is very dependent on benzema and in most games that real madrid did without the benzema they drew or lost, but it was rare cases where they managed to win. in case of a game against barcelona that has been improving a lot then it is almost certain that real madrid will lose that game, unless it is clear that the barcelona defense makes a fatal mistake and real madrid manages to score a goal, or be real madrid it will depend on luck if you want to win today's game