Add to carts and Checkouts (30+) but no sells on every product

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Hello guys,
It seems every time I try to make sells on a product I get Add to Carts and IC, lots of them at even 2$ cost, people engage with the ad and share it, cpm is under 10, cpc around 0.20, ctr is over 3%, they watch the add 40%, etc and I get lots of ATC and IC but every time no sells, why is this? My site is
Any advice will be appreciated because I tried a lot of things and they don't work, thanks!