do u know anyone who ever won any amazon jackpot or prizes?

Yes i won

Amazon's Affiliates will never win its in their rules 

yes seen many winning proofs on social media 

Won Rs 5-50 at least a dozen times playing with 5 accounts over the past 5 years 😅
That is a bad return on investment of my time but I am hoping the odds will catch up and I'll actually land a jackpot one day (a mobile phone).

I got a Google Chromebook (Beta version) once from Google way back in 2010 by filling up a "I'm interested" page that Google had put up explaining why I would be a good beta tester. This was in US and they actually sent me one. So, I do believe in these contests.