This is the 5488th most frequent Japanese word.
うろうろ
Aimlessly wandering or loitering.
うろうろ is used here to show someone aimlessly wandering around due to confusion or being lost.
彼は迷って駅の周りをうろうろしていました。
He was wandering around the station, being lost.
In this sentence, うろうろ emphasizes aimless or inappropriate wandering specifically in a store context.
店員に何も言わずに店の中をうろうろするのはよくありません。
It is not good to wander around the store without saying anything to the staff.
Here, うろうろ describes the wandering movement associated with searching.