If the follower in a silent prayer finishes reciting and the imam has not bowed yet, should he repeat the sura or recite a different sura? He should recite a different sura, he recites, repeats, recites, there is flexibility in this matter.

Reciting is better than repeating, especially if it is al-Fatiha.

So that he does not repeat the pillar, al-Fatiha is a pillar, he should recite a different sura other than al-Fatiha, and Allah knows best.