When Samuel grew old, what did the elders of Israel demand?

Answer: A king like other nations

Because Samuel's sons took bribes, the elders asked him to appoint a king to judge them like all the other nations.

““Look,” they said, “you are old, and your sons do not walk in your ways. Now appoint a king to judge us like all the other nations.””— 1 Samuel 8:5 (BSB)