MERHABA,
Google’da bir anahtar kelime aradığımda, blog makalemin URL’sinin/dijital sayfamın bir yan ürünü olan web sitemin URL’sini/kategorisini/dijital sayfamı görüyorum. Blog makalemin URL’si/seopajının bir yan ürünü olan url/SSS/seopajımla aynı.
Avada temasını kullanıyorum.
Yan ürün sayfalarının SERP’de görünmesini önlemenin ve bunun yerine gerçek sayfalarımı göstermenin en iyi yolunun ne olduğunu öğrenebilir miyim?

If a page is ranking which you don’t want to exist at all (ie it shouldn’t exist for your visitors or for search engines) and theres a different page that you would prefer to rank for the same searches, use a 301 redirect.
If a page is ranking which you **do** want to exist (ie still be accessible to visitors) but you don’t want search engines to rank it, use noindex.
If a page is a duplicate of another page, use canonical.
From what I understand, your CMS is generating duplicate pages on different URLs, based on which category that page exists in, so eg
URL/DigitalPage is the canonical URL for your article, but URL/Category/DigitalPage is also being indexed?
If so, in the first instance I would make sure that all of your articles or pages include a self-referencing canonical tag, so eg
The canonical tag for URL/DigitalPage **and** URL/Category/DigitalPage is set to URL/DigitalPage.
This can sometimes be tricky to configure properly depending on the CMS, so make sure that it is working correctly and isn’t just using the page URL to set the canonical.
This should allow your visitors to still browse your category pages, but send a strong signal to Google to not index them.
Personally, I would also look further into configuring how your CMS is generating these URLs. Whilst I might want URL/Category to be a valid page both for search engines and users, I would likely still prefer that any articles linked to from this page are linked using the canonical URL eg
If the DigitalPage article is linked to from URL/Category, it should use URL/DigitalPage as the href, not URL/Category/DigitalPage.
Likewise, I would want to check that sitemaps etc aren’t generating any non-canonical URLs etc. as both internal links and sitemaps are also used by Google as suggestions for what URLs should’ve indexed, and could result in it choosing to ignore canonicals.