"Aku tidak mau jadi dewasa."

Translation: I don't want to be an adult.

[RobertEddy]

That may be why I like spending so much time on Duolingo, about to complete my 18th course.

[donny309620]

Applying what I have learned, would this be another way of saying the same thing in Indonesian: "Aku tidak mau menjadi seorang dewasa"?

[RitchieRidanko]

Yes, correct