Homepage
The cookie banner shown when first landing on the page obscures the logo, user account, and shopping cart. This is key information a visitor needs to see—the name of the company and the fact that it's an eCommerce site (via the shopping cart).
Move the cookie banner to be fixed at the bottom of the screen instead.
Design elements like banners, modals, hover cards, and chat widgets are often set in a fixed position within the browser window, floating above the main content of the page. These elements can be tricky to test due to their ubiquity—there can often be edge cases where they cover up critical information or buttons that allow users to progress through a flow or access a feature.
Effort: Very Low
Impact: High
Most eCommerce sites left-align the company logo and have navigation links inline. Adhering to common design patterns from other eCommerce sites helps visitors navigate with a minimal amount of cognitive overhead, since they don't need to relearn anything on your site.
Effort: Low
Impact: Low
Having an image of the product is good, but this hero text and the text below should explain the product much more clearly. Almost anything can be ultra light and ultra efficient—what exactly is it you're selling, and to whom are you selling it to?
A headline as clear as possible like, "The most efficient portable gold panning setup on the market" would work better for introducing the product. I wouldn't use exactly that, but as an example it's directionally accurate.
Users need to have an immediate understanding of what the site sells. The homepage should introduce users to products and product categories available on the site.
Effort: Very Low
Impact: Very Low