I think Marseille needs to spend a lot of money to build a squad that can compete with Paris Saint-Germain. The chances of this happening are very slim because Paris Saint-Germain has a very rich club president. Marseille is trying to make more balanced transfers. The strongest team in France is Paris Saint-Germain and the other teams are competing for second place. That's the truth. The only dominant team in the French league is Paris Saint-Germain. Marseille is trying to compete with them but they fail every year.
Yes, that is something very obvious, people always hope that Marseille can catch up with PSG and compete with them, although 10 points is not much, in this case for Marseille it seems to be something very difficult to achieve, PSG would have to do very badly and Marseille very well, and this Ligue 1 has always been dominated by PSG, it would be great if a good competitor emerged for this league to become even better.
Will you buy some players for Marseille? Yes, it could be a good solution , but it is not something that can guarantee its success.