#2 - Tactics that just didn't work
Whether it was employing a three-man defence at the start of the tournament or the decision to play more midfielders in this match, nothing has worked for Sampaoli in this tournament. The reason could be the fact that he has failed to adapt and there hasn't been enough work done on studying the opposition when it mattered the most. In his post-match presentation, he stated that he did not play the attackers to accommodate more midfielders, though the point of doing so was really not clear.
Willy Caballero was completely dropped after his error against Croatia, which is understandable if you have the quality to back it up. However, Armani was really poor in the game and could have done much better, especially against the Mbappe goals.
These two goals came at a time when his team still had a chance to win the match and proved to be the difference at the end. Despite that, it was only his second international cap and what was the coach expecting of his third choice goalie?