Work out which problem you have
These four all look like flat sales, and each needs a different fix. Only the third touches reviews.
Nobody is seeing the listing
If impressions are low, nothing downstream matters. A listing with no traffic can’t convert, and can’t tell you whether the product is any good. It looks like a review problem but it is a demand problem.
People see it and don’t buy
Traffic without orders is a listing problem: images, title, price against similar products, or a variation setup that confuses the shopper. Reviews are one input, rarely the only one.
People buy and say nothing
Amazon doesn’t allow a review in exchange for compensation, so you can’t fix this by rewarding reviews. You can ask plainly for an honest one, and grow the number of real orders.
Nobody outside Amazon knows you exist
If a shopper has never met your brand anywhere else, the listing has to do all the persuading alone. You close that gap off Amazon, where your shoppers spend their time.