Not personally greedy, no. He had several wives and concubines but that was normal for a big clan leader like him. He did not amass any great personal wealth. Any spoils from battle victories, peoples or cities conquered were by tradition divided between leaders, soldiers and officers and who could take what was fairly precisely established by custom.
He acomplished a vast empire from Mongolia to the edge of the roman empire this is why the chines hated the stupid mongorians.
He burned Rome to the ground, he killed millions of people, he spread terror through out both the Easter and Wester Roman Empires, and he conquered thousands of miles of land.
Rome kept paying Attila to not attack rome.if they refused to pay then he will destroy rome.
He went against the surrounding territories and against the eastern and western roman empire