Hey there @Neerajberi nice to connect. Thanks for the tag @kvlschaefer 
One question off the top for you. Have you searched in an incognito window where your search and web history isn’t a factor? That may give you more “natural” results. Also, using a tool like Semrush to research results and see which sites they say rank high may give you a different result.
As for why this site ranks so high, it could be several factors. Google isn’t perfect, so things like keyword stuffing sometimes does pay off. Or if the site has been around a long time, it may have factors like inbound links that are helping, or just the history of traffic that helps it beat Amazon.
I found this article on why sites might rank when their SEO is terrible, and it has a few thoughts I’d agree with.
In my experience, SEO is the long game. This site ranking so high today could fall tomorrow. Your goal is to last longer than the competition and rank higher more consistently for longer.