PSG's performance yesterday was not convincing. But neither was Real's. Overall, the game was disappointing and PSG won happily but deservedly in the end. Real had no real chance, especially the first half was really lame. You should expect more from such a top match. Nevertheless, after the abolition of the away goals rule, everything is still open for Real, although they have to offer a much better performance in the second leg to have a chance of advancing.
I do not think that PSG played any bad, they played very well and they had some connections but they just got unlucky. Even mbappe himself had 2 great chances that he could have scored, and Messi missed a penalty as well so that is 3 chances, add in the goal they already had that is 4 chances total but only 1 converted.
I am not considering all the shots, I am just saying clearly easier to score possessions and there were 4 of them. You do not easily get 4 "clear" goal scoring chances against a team like Real that easily. They were great but they were unlucky. Real on the other hand looked terrible, they really should thank casemiro and militao, they were stars of the game for them and allowed them to have at least a chance.