ANSWER:
DHIKR AFTER SALAH:
You should recite the prescribed adkar after the fard salah, like:
Astaghfirullah 3 times and say Allahumma antas Salam wa minakas Salam, tabarakta ya zaljalil wal ikram.
Ayat al kursi once.
SubhanAllah 33 times, Alhamdulillah 33 times Allahuakbar 33 times and la ilaha illallahu wahdahu la shareeka lahu, lahul mulku wa lahul hamd, wa huwa ala kulli shayiin qadeer once.
Last 3 Quls (last 3 chapters of the Qur’an) 3 times each after Fajr and Maghrib and one time each after all the other fard prayers.
DHIKR BEFORE SLEEPING:
Say once: ‘Allahumma bismika amootu wa ahya.’
Recite Ayat al kursi once.
SubhanAllah 33 times, Alhamdulillah 33 times Allahuakbar 34 times.
Last 3 Quls (last 3 chapters of the Qur’an) 3 times each.
You will find these and other Sunnah supplications for throughout the day and night in a small booklet called ‘Hisnul Muslim’, in English it’s called ‘Fortress of the Muslim’.