Fate vs. Prayer: Everything happens the way Allah intended, then why make dua?

**Assalamu Alaikum.** My doubt is regarding making duas. We have been known that Allah has knowledge of our present and our past and everything which happened and will happen has been recorded or written in a clear record (Al‑Lawh Al‑Mahfooz) > *“And with Him are the keys of the Ghayb (all that is hidden), none knows them but He. And He knows whatever there is in the land and in the sea; not a leaf falls, but He knows it. There is not a grain in the darkness of the earth nor anything fresh or dry, but is written in a **Clear Record**” [[al-An’aam 6:59](https://quran.com/6/59/)]* > > *“No calamity befalls on the earth or in yourselves but it is inscribed in the **Book of Decrees** (Al‑Lawh Al‑Mahfooz) before We bring it into existence. Verily, that is easy for Allaah” [[al-Hadeed 57:22](https://quran.com/57/22/)]* If everything has already been recorded and has been happening based on it. then why should one need to make duas? Just consider this an example. If I had a wish to buy a car by next month. I prayed to Allah to make my wish come true. there are two possibilities. either I get it or I won't. if I buy it, its because Allah accepted my dua and Allah has already willed to make my dua come true. and the other possibility is, I won't buy it and because Allah had never willed to happen. Even another person, just like me had a wish to buy a car, but he never prayer, still to him there are two possibilities: either he buys it because Allah willed to make it happen, or else he won't buy because Allah wouldn't have willed to make it happen. I mean all these are already been recorded in the **book of decrees (Al‑Lawh Al‑Mahfooz)** then what's the point in making dua, as everything will only happen based on it? And there is a hadith which says that nothing of our deeds, actions, and livelihood will be going to be different as nothing could be added or subtracted from our destiny. **[Sahih Muslim, Book of destiny, hadith no. 6392](https://www.sunnah.com/muslim/46/3)** > *Hudhaifa b. Usaid reported directly from Allah's Messenger (may peace be upon him) that lie said: When the drop of (semen) remains in the womb for forty or fifty (days) or forty nights, the angel comes and says: My Lord, will he be good or evil? And both these things would be written. Then the angel says: My Lord, would he be male or female? And both these things are written. And his deeds and actions, his death, his livelihood; these are also recorded. Then his document of destiny is rolled and there is no, addition to and subtraction from it.*