is sauron an elf in rings of power

No, Sauron is not an elf in "The Rings of Power." Sauron is a Maia, a divine being who was created by the god Eru Iluvatar in J.R.R. Tolkien's "The Silmarillion." He was originally a servant of the god Vala Aule but was corrupted by his own desire for power. He is a powerful and malevolent being who seeks to control Middle-earth and enslave the peoples of Middle-earth for his own gain.