Product and some category pages are not indexed. What could be the problem?

Question

Google

The site is almost a year old, internal optimization seems to be done normally. All texts were written by hand, the structure was done normally, there are no duplicate pages, there is no garbage in the index itself, links are regularly put down, and so on. What could be the problem? Maybe my eyes are blurry, and I don’t see the banality ... But many products simply do not appear in the index for a long time. Positions for commercial queries are growing doubtfully, probably due to the lack of a large assortment in the index, while the info traffic is going well. I would be grateful for any hints!
Site vizumos.com.ua

Answer 1

Well, how do you drive them into the index?
Have you checked manually in the webmaster that the pages are seen by the robot and they are not blocked from indexing?
In analytics, do you see that users go to these pages?

Answer 2

Throughout 2021, Google outside the US is very slow: it clearly lacks the resources to process information.
If it does not receive signals about the importance of some new resource, then it will not rush to scan and index it. Wait. If you don’t want to wait, give traffic to the given URLs (advertising, from social networks), put links from well-indexed resources.
This is a common story, no big deal.