make a 2d movement using unity

public void Move(Vector2 velocity)
    {
        if (!IsGrounded)
        {
            verticalVelocity -= gravity * Time.deltaTime;
        }
        else
        {
            verticalVelocity = 0;
        }
        Vector2 input = new Vector2(velocity.x, verticalVelocity);
        Vector2 move = new Vector2(input.x * movementSpeed, input.y);
        _controller.Move(move * Time.deltaTime);
    }