Here's my 2 cents
To amazon trust is a key factor the more of amazon services you use i.e where amazon takes a bigger slice of your margin the more visible you'll be. i.e fba - but beware
Amazon is a stealthy operator : every process is thought out,with one objective,is your product going to sell a number of units that meet amazon's own portfolio threshold.
lots of images, unique product description , buy box pricing to begin etc amazon is very easy to monopolize the secret is cash flow and advance product in depth research,plus a backup when you sell to many.
As the merchant seller is a tool to harvest, test and sell the world's product catalogue ,then taken by amazon.
Just learn the game, listing is simply a gate,pricing buys the buy box, customer feedback (customer centric's) keep you in the game.