It is hard to tell without inspecting the Google Search Console. Try to figure out changes occurred on the page or off the page, to get a clue of correcting measures.

Reflection of domain authority takes time. Keep getting quality backlinks. Regarding SEO score, it requires strategic off-page optimization as per the backlink profile of...

Hello everyone, I started building links to my site, what is the difference between Dofollow and Nofollow links? How to build backlinks to a website?

That site is trash. Loads forever and all I can see are ads all over the place. Move on, enough link hunting. Another thread with live link will mean ban for you @alecia

The page takes a long time to load, the posts are missing such things as the table of contents. First of all, I would take care of the onsite work because it is important...

The issue is already addressed in previous thread, https://www.seoforum.com/thread/my-blogging-website-pages-not-indexing-on-google for the same site.

Thankyou for sharing your opinion.

In Google Search Console there is a section of Removals. All unwanted URLs can be removed from the Google's cache. After this, apply for review by making them fixed in GS...

Thank you for your answer @binayjha ! The problem that I'm facing ATM is that those attachment pages don't exist anymore in my back end (can't see them in wp-admin at all...

Comments backlinks are important as they generate traffic to the website though most of them are no-follow links. But it still has importance.