1. What do you suggest as a solution if you are a reseller of a product and you are using the same description as measurements, characteristics etc? Especially if your wholeseller demands not to alternate the titles and the descriptions.

2. Then you are saying that all resellers selling, for example, an X model of sports shoes will get penalised because they are using the same description? Test: take a phrase or a paragraph from the most authoritative brand and paste to google. You will have results from other resellers. They don't actually look "penalized" if you see their PA score...

I will check those guides and see how I can work on optimizations. Thank you.

If my pages were ranking top 20 keywords I would use tools like MOZ! So no they are not ranking top 20 and I want to achieve this....

Obviously, I want to change the URL in order to optimize for a better keyword and not fix broken links. So you are saying that it will hurt SEO? I am using moz tools because SEO in not 100% optimized for my site. So I don't think my pages are ranking well. And ranking well is related to the specific keyword you want to rank for a page.  An "expert" from MOZ told me that it can take like 5-10 months to see results from SEO actions. Then this is not measurable...I can't fix something today "ex a URL" and wait 10 months! I will need a more specific answer!

As a good practice of SEO is to have your keywords in the links. I am thinking of doing some optimization and change my urls to more effective keywords. I am using shopify and there is an option (a tick) that you can check while changing the url (ex. for a category, for a product, for a blog post). This will give a redirection to the old post to the new.

Is it good practice? Is it risky for losing SEO or it will help to rank higher because I will have better keywords in my links?