The score at half time was 1-1, but I am still quite confident that Marseille will win this away game. Because at least, Marseille is the team that has the best results for away games so far this season in Ligue 1 and thus, maybe in the second half Marseille will succeed in scoring their second goal. Although it may only be a narrow win, but it is still an important result for Marseille to strengthen its position in second place in the standings. Although indeed, basically Rennes is also not a weak team but, considering that at this moment Rennes is only in the middle zone of the standings, with a trend that is not good enough like that it will give Marseille a good chance to beat Rennes in this match.
Marseille successfully won full points at Roazhon Park, Rennes' home base. Although they were left behind in the 43rd minute, this did not destroy the mentality of De Zerbi's team. After Rennes' lead, only two minutes later Mason Greenwood was able to equalize. As you said, in the second half Marseille reversed their advantage from a goal scored by Rabiot through Greenwood's assist. After that, no more goals were scored by either team, resulting in Marseille winning with a score of 2-1. With this, Marseille maintains the distance in points from AS Manaco, while Rennes is in an unsafe zone. Well, now Marseille is only four points behind Paris Saint-Germain, but PSG has the opportunity to widen the points from the team below it by winning the match against Saint-Etienne. By the way, if Marseille had a much more established striker, I'm sure Roberto De Zerbi's team would be much more productive in terms of scoring goals. because, Neal Maupay and Elye Wahi seem to not always be able to play consistently throughout the match. Well, De Zerbi should target a well-established player who wears the number nine. If they can get him, I'm pretty sure Marseille will be much more competitive.
By the end of the first half, both teams have completely lost their consistency, as is clear from Marseille's reply goal just two minutes after Rennes took the lead. This moment offers palpable evidence of just how quickly changes can impact the dynamics of a match when attention wavers.
It was at this point that things took a turn for the worse. Rennes were caught napping yet again at the onset of the second half and conceded a goal. Rabiot scored from a Greenwood assist. That goal proved to be the difference in a game that ended 2-1 in favor of Marseille when the final whistle was blown.
This situation makes things even harder for Rennes, as they're currently in an unsafe zone. In the meantime, Marseille did take their chances to keep the competition up at the top of the standings. And I agree with you, even though in this match Marseille was able to return to winning ways, but to be able to compete at the top of the standings they still need new ammunition to be able to sharpen their attack line.