Real Madrid losing points like this is like a big wound on the way to the championship. Valencia had no away win before this match, but with this win, they both prevented Real Madrid from winning the championship and earned three extra points to stay in the league. Because most people thought Valencia would definitely lose before the match. Valencia got the three points with a great game.
Valencia has had difficulties this season and they are struggling to get out of the relegation zone, but facing Real Madrid they were able to give a surprise because previously many people predicted that Real Madrid would win the match easily.
Vinicius' failed penalty execution made everything messy because they should have been able to equalize so as not to lose full points and it could be that when the penalty was successful, Real Madrid could have won.
Luckily the defeat they got was not exploited well by Barcelona because they also got a draw, now the points difference is four and Barcelona is still quite favored to come out as a candidate for the championship.