The problem with the PSG team wasn't about the poor management of the team because the management brought in good number of players to help solidify the strength of the team but they failed because at some point the players wasn't having a good relationship with each other on the field.
The Manchester City team is a typical example of a team that made good use of their money to get what they want because they got a good manager who got quality players that has helped the team to win the trophies they wanted, I think the problem that PSG has for not winning the UCL with the presence of Messi, Mbappe, Naymer and Ramos was bringing the stars when they were not in their best form.
Manchester City has put full trust in Pep Guardiola, and is supporting him with the maximum budget to build squad depth, which is not only capable of dominating the Premier League, but also capable of winning the European Champions League. Maybe this is where the difference lies with PSG, who like to change coaches when they fail to meet expectations in a short time, indicating that management is the one who controls the team, the manager or head coach must adapt to management wishes. This is not wrong, because each club has its own approach, and fans certainly hope for the best for their club. PSG after Mbappe departure is still the dominant force in Ligue 1, there is no doubt about that. There is a possibility that PSG will again build a star studded squad, as they have done by bringing together Messi-Neymar-Mbappe and several other top European players in they squad.