Sakura does not love Naruto so why does she get jealous when he has moments with other girls?

No.

Sakura is still in love with Sasuke as confirmed in the manga. She has no romantic interest in Naruto, nor has she ever.

It has been very slightly implied that Kishimoto might have taken their relationship in that direction at one point, but at this point in the manga, it is clear that she is only interested in Naruto as a comrade and a friend, nothing more.

Any notions as to otherwise is merely the fancies of a NaruSaku fan who cannot accept that the ship is sunk.