0 sales on product in 3 weeks with PPC

Hi,
So I launched a product on several platforms and have not gotten any sales yet. I am the most concerned about Amazon as I have already spent $200 on PPC in 3 days. I have gotten 60,000 impression but my click throught rate is only 0.28 and has sold nothing. I even lowered my price by $10 but that did nothing. I have spent most of my money on this and have inventory that is not selling at all. For context, I did do market research before buying inventory and people are selling successfully in this niche. What are some of the things that could be going wrong here? Is there anything I can do to save my product?