We come across many ‘Supplications’ in the Quran that Prophets and believers do. Let me put forward my understanding and it’s purpose of it.
Let’s take this for an example: Among them is he who says, “Our Lord, give us in this world [that which is] good and in the Hereafter [that which is] good and protect us from the punishment of the Fire.” 2:201
Now the purpose of sharing dua’s in the Quran is to make you internalize the message within. You could say this dua as much as you want, but do you really think Allah wants that from you? What good is lip service? Allah wants you to develop your soul to the point where your state of being is a witness to this supplication.
Most hateful it is with Allah that you say that which you do not do. 61:13 You see how powerful those words are? So before you say the supplication in 2:201, make sure you have internalized it. Your actions should be a proof of the supplication you make. Are you really working for priming your soul to the point where you get the best of both worlds?
Praying without action is useless. It’s simply lip service – the easiest thing to do. I can pray all I want, but to pass an exam, I must study. Similarly, I can pray all I want for people who are oppressed in the world, but until I do something about it, its utterly useless and a mockery of your own ‘self’.