ANSWER:

There are certain things that we think are good for us while only Allah knows if they’re good or not and He might not grant you this dua because it might not be good for you.

I made the same dua during 2 months of praying during every fard sallet and every tahajud. I also prayed on friday extra en asked every hour for this dua. I also asked during fasting I have read a lot of hadiths and video’s that say during tahajud a dua is like a arrow that doesnt miss it target, and while fasting your dua is been answered and not rejected. But i see no change