optical mouse

I just copped from bestbuy for 27 bucks on sale today. I bought this Logitech m570 wireless: https://www.bestbuy.com/site/logitech-m570-wireless-trackball-mouse-gray-blue/1260761.p?skuId=1260761 I been messing around with it for over 30 minutes now and man, not moving your hand everywhere on...