This is the 1910th most frequent Turkish word.
istediklerini
"Whichever they want" or "what they want."
The word 'istediklerini' here is used to refer to 'what they want,' indicating the desires or wishes of the subject.
İstediklerini yapabilen insanlar her zaman mutlu olurlar.
People who can do what they want are always happy.
In this sentence, 'istediklerini' indicates 'what they wanted,' functioning as the object of the verb, implying the fulfillment of the children's wishes.
Çocuklara istediklerini verdim çünkü çok tatlılardı.
I gave the children what they wanted because they were so sweet.
Here, 'istediklerini' conveys 'what they wanted,' serving as the direct object within the context of acquiring a present.