It seems like Mbappe can't easily adapt to the league. He was so wasteful in this game and was always shooting straight to the goalkeeper. It's probably due to him not having pre-season. Also, he's finding it tough to get through with so many guys always shutting him down.
Contrary to popular belief, La liga is a very difficult league to score goals. People thought Mbappe was going to go there and burst onto the scene immediately like he did in France and they're wrong. Mbappe will score goals that's for sure, he's very good and is a prolific goal score, but he's going to find it a little harder than people expected. Messi and Ronaldo scoring a bunch of goals in the league made people believe it was easy to score goals in La liga.
Also, the first half lacked creativity, that beautiful free-kick from Valverde made Real Valladolid come out to play otherwise, the way Real Madrid approached that game wasn't working. Maybe Real Madrid or Carlo Ancellotti should stick to Kylian Mbappe on the left, Endrick on the right and Vinicius Junior on the left. I don't see Rodrygo in Real Madrid for too long, I don't see were he blends in for long term plans.
I agree that Mbappe is mostly effective from the left but that would mean taking Vini out of that wing and we all know Vini is not effective at all on the right. As things stand, Ancelotti is going to find a way for things to work because both Vini and Mbappe are too valuable to be on the bench and the only solution I see is for Mbappe to keep playing from the middle. I believe with time there will be more understanding.
As for Mbappe, ill prefer he starts learning how to be a centre forward because his pace is his biggest strength and as he ages, that pace will reduce and if he doesn't evolve it will be a problem for him. The same way Ronaldo evolved would be the best decision for Mbappe right now.