There was no financial problem for PSG. Naturally, their target was always UCL. After such a team cannot achieve its goal, it needs to work harder towards that goal with better transfers, but PSG seems to be a little tired of this. The French league is already a very simple level for them. There is a huge difference in quality between them and other teams. So if they are to fully focus on their goals this year, they must convince the best players. This is very difficult because League 1 is not a dream league like the Premier League.
They should wake up because losing Mbappe is really a big problem, it's not same like losing Neymar and Messi where they're replaceable. If PSG didn't sign any great player, their goal should be win Ligue 1 since there's a high chance they might not become a champion in this season.
Lyon have successfully sign 7 players, 4 of them are from Premier League. I wouldn't be surprised if Lyon will finish in the top 3 considering they can comeback from relegation zone to rank 6 in the last season.