Mbappe's second goal (Real's third goal) was completely Leganes' mistake on the wall.
The wall broke apart before Mbappe could hit the ball and it was a very ineffective shot.
Real struggled but got 3 points with 3 goals.
Those two goals has seen him behind Robert Lewandowski as the second highest goal scorer in the La Liga Competition this season. I also remember a few posters here who said his signature to Real Madrid was a personal one ( Only wanted by the club president Perez ) but look at him in his first season rocking the Bernabeu, with more games to go. That free kick was his first ever career free kick. I will also blame the wall but most importantly, that was a great technique by Kylian Mbappe. Just like his idolo, he's buzzing in his first season.

I think that Cristiano Ronaldo reached 33 goals in 35 matches, he was scoring almost 1 goal per match, Mbappé reached the same amount of goals playing almost 10 games more than Cristiano. Oh, and Cristiano had way more assists than Mbappé. It's a very good achievement anyway but Cristiano would give you a different vibe from Mbappé, you really had the feeling he could do whatever he wanted, I don't see that with Mbappé.