How to rank a product on amazon once we have listed our product there using UPC code?

How to rank a product on amazon once we have listed our product there using UPC code? I am sure there might be some trick but i googled a lot but in vain. SO finally I am here to ask all my seniors or any other seller who has been selling on amazon.

Amazon ranks a product based on sales rank. The more a product sells, the higher it ranks.. I sell books. I believe it's the same with other products..

The more sales and reviews you get, the higher rank you'll get Try to get few reviews from Fiverr. But don't buy bulk. Try to get only 5-10 reviews on your product and they'll enough for your jounrey