Most ecommerce stores don’t lose buyers because of one tiny button color.
They lose buyers because the buying journey doesn’t answer the right questions in the right order.
A visitor lands on your store and immediately asks: What is this? Why should I care? Can I trust this brand? Is it worth the price? Will this work for me? What happens if I buy and regret it?
If your store doesn’t answer those questions fast enough, the buyer leaves. Not because your product is bad. Because the store didn’t help them feel ready to buy.