I really think you need to fill out the website more. Do you want categories? Yes. Then, create and use them. No? Then don't have categories show up when someone lands at your page.

When they land at a specific post, it isn't as bad. Take a look at what your site looks like when someone lands at your domain though. The word "uncategorized" jumps out of the post summaries. That isn't good.

Your content is great but the presentation needs work. I've had the same problem in the past. Pay some mind to presentation. Not just inline in the post but also in the overall presentation of the site.

Hope this helps a bit. Really good content, seriously. That'll get you traffic. Getting clicks need some attention to the look too though. Just need to go a bit further.

Have you listened to this https://my.wealthyaffiliate.com/training/how-to-boost-your-conversions-sales

or
https://my.wealthyaffiliate.com/training/mastering-comments-maximizing-engagement-conversions

or seen this https://my.wealthyaffiliate.com/bis/blog/tips-for-increasing-conversion-rates-infographic

That's a good question and I am pretty much dealing with the same issue. However, I do think it is because my affiliate site is very new still and just needs higher traffic on a daily basis.