The honest answer to how to remove a review is: usually you cannot, and the ways people try are the ways accounts get suspended.
There is a real list of things that work, it is short, and knowing where its edges are is worth more than any tactic.
A product review is about the product and sits on the detail page, shared by every seller offering it. Nobody owns it and no seller can remove it.
Seller feedback is about you: dispatch, packaging, service. It sits on your seller profile and it feeds your metrics.
The distinction matters because the routes are different. Feedback about a fulfilment failure on an FBA order is Amazon's responsibility rather than yours, and that kind is removable. A one star review saying the product broke is not.
When it breaks the community guidelines: profanity, personal information, a review that is really about the delivery rather than the product, promotional content, or an obvious conflict of interest.
Reporting one is a form, and the answer is a judgement rather than a negotiation. Reporting a review you simply disagree with wastes the route and, done repeatedly, does not help how your account is seen.
Seller feedback has more grounds: an FBA fulfilment issue, a product review left in the feedback field by mistake, obscenity, or personal data. Those are worth checking every month, because a removable one left in place is dragging a metric for no reason.
You may contact a buyer about their order and you may solve their problem. What you may not do is offer anything in exchange for changing or removing a review, and that includes a refund conditional on it.
You can refund unconditionally, and you can say so, and many people update a review afterwards on their own. That is allowed precisely because it is not a trade.
Public replies to reviews were withdrawn for most sellers, so the useful reply is the one nobody sees: fix it, and let the next fifty reviews say something different.
Volume. A 3.9 average with sixty reviews moves with the next twenty; the same average on six hundred does not, which is why acting early matters far more than acting cleverly.
So the work is compliant review generation through the request a review button and, for a registered brand, Vine on new products, plus fixing whatever the negative reviews keep saying.
That last one is the part people skip. If four reviews complain about the same thing, it is a product or a listing problem, and no amount of new reviews will outrun it.
A large share of one star product reviews are about something that happened after the product was made: it arrived late, it arrived damaged, the box was open, the wrong item came.
On an FBA order that is Amazon's fulfilment and those reviews frequently qualify for removal, because the guidelines say a product review should be about the product. It is the single most productive thing to check on a page with a rating that does not match its returns data.
On a merchant-fulfilled order the same review is about you, and the fix is upstream: packaging that survives a courier, a dispatch promise you can meet, and a delivery service whose failures you hear about before the customer writes them down.
Paid reviews, review exchange groups, inserts offering a gift card or a free product for a review, asking customers to contact you before leaving a negative one, and using another account to leave or remove reviews.
All of it is against policy, all of it is detectable, and the consequence is the account rather than the review. It is worth being blunt about this because it is sold to sellers constantly and priced as though it were a service.