Try to improve your technical seo. Lighthouse gives points to improve. With Google's mobile first in mind f.e. your CLS is much to high. UX is a major ranking factor, so...

I understand. It is may be better for seo, especially, when I have breadcrumbs, which I do have. My problem is, that for example: I have 1 position for particular produc...

domain.tld/product-name is (should be) better, as you're prioritizing your keyword and have no clutter in your url. However, your path is OK - there is nothing you should...

Thanks. One more question to this? Even if my top keyword is of course the product name, I should not be thinking about changing it to "domain .com/product-name&quot...

Should be visible in the source code. Otherwise provide a link to the page.

The issue is about no anchor text. With anchor text links you can see the link in the text but the issue is there is no text but there are links being redirected to other...

If you know what an anchor text is? Solving shouldn't be too hard? Otherwise read first about anchor text

Can PageRank drop significantly after server error? Yes, it's the perfect recipe for a 100% bounce rate. A signal for Google your content isn't what people are looking fo...

the Drive file doesn't seem to be publicly available... just saying

A semantically accurate URL is the best. There's nothing wrong with yours.