What is ego, id, and superego

ego is the persons sense of who they are as an individual I think not sure though, no clue on them others

Ego: the mediator between the id and the superego, trying to ensure that the needs of both the id and the superego are met. Id: primitive instincts and energies underlying all psychic activity. It's the primal or beastlike part of the brain, its prime motive is self-survival. Superego: the component of the human psyche that has internalized the values and standards of society. As it embodies the morality principle, the superego is opposed to the id.