Hey Jan, glad it made you think. As you've found out it's not easy to rank #1 on Google especially when so few people will link to your product reviews. You need to tackle a specific niche with a focused target audience as a whole and build a community of like minded people around your site in order to make any significant income online sustainably and for the long term.
Product Linking > Native Shopping Ads: Let’s say you’ve written a review about a new hair product. If you want additional money-making opportunities from this despite only recommending a single product, you can add native shopping ads to the end of your content. Think of them like related post content, except it’s a banner that promotes other Amazon products.
Bad product picks could hurt your brand. Chances are good that if you’re including an affiliate link in your content, then you’re willing to put your full support behind the product. However, if the reputation of that product should sour with the public and you fail to catch it, that recommendation of an untrustworthy product could hurt your brand.
There is no shortage of products you’ll be able to promote. You’ll have the ability to pick and choose products that you personally believe in, so make sure that your campaigns center around truly valuable products that consumers will enjoy. You’ll achieve an impressive conversion rate while simultaneously establishing the reliability of your personal brand.