I need a Dua for good death

no this dua doesn't change the age for time of death

Whoever Allah guides none can misguide, and whoever He allows to fall astray, none can guide them aright. We bear witness that there is none worthy of worship but Allah Alone, and we bear witness that Muhammad (saws) is His slave-servant and the seal of His Messengers.
Allah Says in the Holy Quran Chapter 3 Surah Ale Imran verse 145:

145 Nor can a soul die except by Allah's leave; the term being fixed as by Decree

Allah Says in the Holy Quran Chapter 63 Surah Munafeqoon verse 11:

11 But to no soul will Allah grant respite when the time appointed (for its death) has come: and Allah is well-acquainted with (all) that ye do.

Allah Says in the Holy Quran Chapter 7 Surah Aaraf verse 34:

34 To every people is a term appointed: when their term is reached not an hour (moment) can they cause delay, nor (a moment) can they advance it!

Sahih Al-Bukhari Hadith 4.430 Narrated by Abdullah bin Musud

Allah's Messenger (saws)said, "(The matter of the Creation of) a human being is put together in the womb of the mother in forty days, and then he becomes a clot of thick blood for a similar period, and then a piece of flesh for a similar period. Then Allah sends an Angel who is ordered to record four things. He is ordered to write down his (i.e. the new creature's) deeds, his livelihood, his (exact time, place and date of) death, and whether he will be blessed or wretched (in religion). Then the soul is breathed into him.
The amount of time each and every individual will live to give his test on this earth is Decreed by none other than the Lord Himself; even before the soul is entered into the bodies of the unborn when it is still in its mothers womb.
Allah Says in the Holy Quran Chatper 6 Surah Anaam verse 61:

61 He (Allah Subhanah) is The Irresistible (Watching) from above over his worshippers and He sets guardians (Angels) over you. At length when death approaches one of you, Our Angels take his soul (at the exact appointed time and place), and they never fail in their duty!



Allah Says in the Holy Quran Chapter 4 Surah Nisaa verse 78:

78 "Whersoever ye are, death will find you out (at its exact Decreed time); even if ye are in towers built up strong and high!"



Allah Says in the Holy Quran Chapter 32 Surah As-Sajdah verse 11:

11 Say: "The Angel of Death put in charge of you will (duely) take your souls (at the Decreed time and place): then shall ye be brought back to your Lord."



Your Question: I would like to ask ,whether death can be halt due to dua's

Respected Sister in Islam, in light of the above absolutely clear guidance of the Quran and the Sunnah, it is evident that the time of each individuals death is Decreed by Allah Subhanah.and there is no one and no thing which has the power to change the Decrees of Allah Subhanah.



Your Question: for eg. a person is driving and met with an accident and did not die due to the prayers of some one" , is it true that prayers will postpone death,

Allah Says in the Holy Quran Chatper 57 Surah Hadid verses 22-23:

22 No misfortune can happen on earth or in your souls but is recorded in a Decree before We bring it into existence! That is truly easy for Allah:

23 In order that ye may not despair over matters that pass you by, nor exult over favors bestowed upon you. For Allah Loves not any vainglorious boaster



Allah Says in the Holy Quran Chatper 6 Surah Anaam verse 59:

59 With Him (Allah) are the keys of the Unseen the treasures that none knoweth but He. He knoweth whatever there is on the earth and in the sea. Not a leaf doth fall but with His Knowledge: there is not a grain in the darkness (or depths) of the earth nor anything fresh or dry, but is (inscribed) in a Record Clear.



Allah Says in the Holy Quran Chatper 22 Surah Hajj verse 70:

70 Knowest thou not that Allah knows all that is in heaven and on earth? Indeed it is all in a Record, and that is easy for Allah.



Allah Says in the Holy Quran Chatper 34 Surah Saba verse 3:

3 The Unbelievers say "Never to us will come the hour". Say "Nay! But most surely, by my Lord, it will come upon you by Him Who knows the unseen; from Whom is not hidden the least little atom in the heavens or on earth: nor is there anything less than that or greater, but is (Decreed) in the Record Perspicuous.



Al-Tirmidhi Hadith 94 Narrated by Ubadah ibn as-Samit

Allah's Messenger (saws) said: The first thing which Allah created was the Pen. He commanded it to write. It asked: What should I write? He said: Write the Decree (al-Qadr). So it wrote what had happened and what was going to happen up to eternity.