Supplications

بِسْمِ اللَّهِ تَوَكَّلْتُ عَلَى اللَّهِ وَلَا حَوْلَ وَلَا قُوَّةَ إِلَّا بِاللَّهِ “I depart with Allah’s name, relying on Him. There is no might or power except in Allah.” (Tirmidhi) اللَّهُمَّ إِنِّي أَعُوذُ بِكَ أَنْ أَضِلَّ أَوْ أُضَّلَّ أَوْ أَظْلِمَ أَوْ أُظْلَمَ أَوْ أَجْهَلَ أَوْ يُجْهَلَ عَلَىَّ “O Allah, I seek refuge in You from misleading […]

Yes, it is allaowed.

No, this is not authentic.

If the meaning is good, it can be used providing you use it while knowing that it is not from the Prophet salla Allahu alaihi wa sallam.

Alahumma inni authu bika minal hammi wal hazan wal ajzi wal kasal wa albukhli wa al Jubun wa dala’aul daini wagalabti alrijal

It is Allah who will take care of his offspring after his death.

This is not part of the supplications of Wudhu. It is weak regarding Wudhu.

If you did this at the beginning and at the end this is very well,otherwise do this at the very beginning

You can do it in any way you want, no problem

Allah will grant him a million good deeds and erases a million bad deeds.