That is the weakness of PSG having a lot of money or being one of the very rich clubs but not knowing how to bring this club to get more trophies in other big competitions whereas if we look at the previous PSG does not lack anything in terms of players and the coach is very strong. but as some people say, money can change everything or change it for the worse.
I really agree with anyone who says PSG should learn from clubs from other leagues such as Manchester City who have been patient in improving their performance every season and that learning starts from consistently being the leader in that league so that if they can master the domestic league for a few months maybe the coach can try to appear strong in the champions league and don't always have to change players and coaches.
Paris Saint-Germain are financial balance without doubt, they're sits in the position to signed any player that want without any challenge. Where they tend to have problem was the fact they failed to win major trophies, only settling for lesser titles which doesn't suit their standard anymore, I think is time for Nasser Al-Khelaifi to do good by bringing on special talented players that would be able to elevate the team's performance because it's becoming more open that PSG are unable to compete with top competitors for major trophies.