The Earth moves negligibly towards you as you hop off the chair due to your insignificant mass compared to Earth's.
When you stand on the seat of a chair and then hop off, the Earth does experience a gravitational attraction towards you, as described by Newton's law of universal gravitation. However, the effect is incredibly small due to the vast difference in mass between you and the Earth. The force exerted by the Earth on you is equal and opposite to the force you exert on the Earth (action and reaction).
While there is technically a minuscule motion of the Earth towards you, the displacement is practically negligible, and the Earth's enormous mass ensures that any resulting movement is imperceptible. In everyday scenarios, the motion of the Earth in response to such actions is effectively zero, and we can disregard it for practical purposes.