بسم الله الرحمن الرحيم
(1) It is not proved from hadith to read these wirds; hence they are not sunnah. So if they are not recited by considering necessary then it is not bida’h, you may read them. Instead of the ones mentioned above, if you read the following dua before going to bed then it is better:
اللهم باسمك اموت و احي one time,
Ayatal Kursi one time,
From آمن الرسول to the end of the Surah Al-Baqarah one time
and Tasbih Fatimah.
Then recite قل هوا لله احد، قل اعوذ برب الفلق، قل اعوذ برب الناس 3-3 times and blow on your hands each time and pass your hands over your whole body.
Also read اللهم بارك لى فى الموت وفيما بعد الموت 25 times. It is sunnah to read these duas as they are proved from the holy Prophet Muhammad (صلى الله عليه وسلم). You shall receive more reward in it.
Allah knows Best!
Darul Uloom Deoband
This answer was collected from the official ifta website of Darul Uloom Deoband in India.