In Hinduism Brahman, the One without form, is consisted of 3 energies (1) The one that creates (2) The one that preserves (3) The one that destroys. Each are represented in the manifested forms of Brahma, Vishnu and Mahesh which Hindus worship as a way to pray to the manifestation of a formless supreme consciousness/God Brahman. All is just oneness and only the ignorant or those with ulterior motive would conclude something else. The accusation of polytheism has been coined by the Abrahamic religions. But it only shows their poor understanding of Hinduism. Hinduim has a pluralistic view of oneness which makes it very tolerant of other views. This plural world itself is oneness. Moses, Jesus, Mohammad are all proponents of Oneness yet their followers are still confused that they have a pluralistic view of Oneness.
Because god is made up of god and goddesses as well ! I think ?
No, Hindus believe in many Gods, the main or head ones being Lord Vishnu, Lord Shiva, and Lord Brahma.