how can I know which parts of the salah should be recited loudly or silently? I know Fajr and the first two rak‘ahs of Maghrib and Isha are loud. When praying alone, should I say takbir and “Sami‘a Allahu liman hamidah” aloud as the imam does? are Sunnah prayers recited aloud or silently?

Ustadh AbdulAziz al-Haqqan

Sunnah prayers of loud prayers u can pray them out loud and silent ones silently, and even if you did not do that there is nothing on u as it is a sunnah and not mandatory to pray out loud or not.