He had some terrible performances for them too vs. Porto for example.
Even Messi with the biggest carry job I have seen in the CL couldn't pull us through to the final with our band of idiots. Just not something you can win on your own with so many players and other factors involved.
True, last season at Juve he had ceased to be a big-game player, scoring mostly in Serie-A, the moment was gone.
Messi was let down hard in 18/19 by his team, just pulling that free kick vs Liverpool was insane enough, not to mention rest of the plays he made.