This is not recommended.

It is not mandatory to recite the Fatiha after the Imam in loud prayers. It is best for you to listen to him and then after he finishes, you recite it even if he doesn’t pause.

Imam recites al-fatihah loud prayers congregation(Fajr, maghrib esha) I recite al-fatihah same time silently e.g when the imam says alhamdullilahi rabil alammen I say the same, imam says ar rahmaniraheem I say the same etc.. this ok ?imam does not pause after reading al-fatihah starts surah straight away- if I read al-fatihah I may not get to listen to surah being recited or be able to finish my recital of fatihah if imam reading short surah?