Messi is an amazing player and he proved it in Argentina and Barcelona but recently he cannot have a good performance in PSG and that's all because of not having to focus and not having a good atmosphere in the team, I think Messi will have a much better performance after the returns to Barcelona where the fans love him and he will have the respect he couldn't have in PSG.
The effect of poor performance is that there are two influences that might be the cause, the first is from a team that might be difficult to work with, so it still takes a lot of time for Messi to adapt to some of his important colleagues at PSG, the second may be the influence of Messi's age, which is old enough to influence Messi's performance. At least Messi has tried hard to fully contribute to PSG and wants to bring victory to PSG.