PSG won the league but I think I think the teams in not happy at all because they didn't reach the goal they wanted to reach.
PSG bought many superstar players and they spend too much money to keep players like Mbappr the reason for spending all this money was mostly because they wanted to achieve something in the Champions League otherwise for winning the French League they didn't need this much investment.
The main reason psg won't be happy is champions league they couldn't achieve. The main reason for getting all this big players was to win the Champions league, but still it was impossible for them to achieve it. Apart from the Champions, even in French league psg performance this season was not very impressive.
For me personally, just being champions in Ligue 1 is not enough for Paris Saint Germain, because here they really dominate and no team has the same strength as them. They are far superior in any way than any other team. The Champions League should be a place for them, but in reality their luxurious squad cannot speak much in that competition. They are less competitive than other big teams in the Champions League.