Friendly matches are not a worth to see games, they were played without fierce, and we see so many tries of players and tactics.
Some games are played with subs players and the one with starters are played without the real energy of a game, no one its gonna risk a injury. Thankfully its gonna end soon this part of the season called pre-season.
Not that we underestimate the game right? depending on which perspective you look at it. if only from the pre-season context, everyone knows that it won't have any impact, but judging from the perspective of the readiness of new players, backup players who will be needed later when core players are injured, stability with each other and much more so that we are wiser in assessing it. I understand what you mean, but when you see an elite team like the one that entered the Champions League losing that match, at least you can make notes or evaluate to improve the gaps that are easy for your opponent to penetrate. See Bayern Munich against Man City, Barcelona against Arsenal and Madrid against Man United, all aiming to improve results in training to be better prepared for next season.
The PSG team has implemented many strategies to do well in the Champions League. But so far it has not been successful. It remains to be seen what kind of changes this season will bring.
The aim of the changes made by PSG is to be even better than last season, but everyone will probably see it next season, because one of the strikers that PSG relied on very often last season will not be seen again next season. So that PSG must be able to replace the vacant position with another player whose talent is not bad so that it can be better suited to the striker who will still survive next season, namely Neymar.
Under Luis Enrique coaching PSG formation and strategy are clearly very different and can be a good change point by not relying on one player, Enrique still has time to emphasize the individual skills of each player and by improving these skills at least the ability to play gives more confidence. Currently, the center attack is not very effective, when clubs like Man City first showed the skill of individual players evenly and the results were quite good. Maybe that's what Enrique wants to implement at PSG, considering that when Mbappe was still around, the game focused more on him than expanding the attack on all sides.