Sometimes it's beginners luck. Other times it's effort, luck or the country you reside in.
If you're from India, Pakistan, Bangladesh, Africa, Spain, Italy, Greece or the Middle East, then you will have a hard time winning anything on this app because the brands that works with Picky do not ship to these countries due to strict customs regulation and high taxes of these countries.
Also, you haven't written a single product review. You can't expect to win if you never wrote a review before. How would Picky be able to tell that you're able to write a good honest review?