Today I just made Dua like: "O Allah, please give: ability, power and knowledge for those who have left Islam at their deathbed time to recite shahada easily and also to answer grave questions all three easily inculding the weak and extreme weak Muslims just as a sign for forgiveness and mercy". Is my Dua haram or halal?

The reason I made this Dua because I wished for angels to pray for God To grant me mercy and forgiveness at my deathbed time in case I committed disbelief or for being a weak Muslim, because I dont want to deal with His Punishment.
Is it possible to make my Dua be strong?