Data during the game. In fact, Kylian Mbappe has scored 5 goals in all the La Liga matches he has played. 2 of them were assists from teammates, while the other 3 were penalties. Kylian Mbappe struggled to score goals in the many opportunities available to him in many matches, while Vinicius, who played the role of scoring opportunities for his teammates, appeared more.
As Real Madrid's main center forward, Kylian Mbappe should be able to take advantage of more goal opportunities than other players. With this I can conclude that Mbappe failed with many of his goal opportunities, while Vinicius was superior to him.
Dude have you being watching their game... though earlier this season he made alot of mistakes and loosing some clear opportunities, I don't know what really caused that but it's obvious he wasn't inform right before coming to Real Madrid but along the way he started coming up but I don't think his team mates really want to give him some chances, I 'very watch some of their games recently and there would have been a great progress if they worked together but it seem there's something wrong especially when it comes to getting the ball across to Mbappe... As Real Madrid's main center forward, Kylian Mbappe should be able to take advantage of more goal opportunities than other players. With this I can conclude that Mbappe failed with many of his goal opportunities, while Vinicius was superior to him.
Besides, the reason why you all seeing the whole lapses is because almost everyone is over expecting from him, it's not like he can get 80 goals in a game
you'll need to relax for the dude to do is thing and stop overwhelming him with some thoughts 
All fans hope that Mbappe can perform as well at PSG with Real Madrid. But right now, I think Mbappe is in the process of transitioning to a different playing pattern with a different coach and teammates. Mbappe is a good center forward and has speed, but Real Madrid does not have a game scheme that relies entirely on center forwards. Mbappe's finishing in some matches may not be good, but over time he will get back to his best performance.
Real Madrid has players who are no less good in different positions, including Vinicius, Bellingham, Rodrygo and others. When a team's game does not focus on one player, every other player can score a goal, including defenders and midfielders.