Ways to quickly attract subscribers to the group?

Question

Marketing

Hey!
Recently I began to notice a lot of closed groups on Instagram (mostly they are closed), which have 100, well, a maximum of 200 posts and at the same time the number of subscribers is from 1.5 million or more. Please share your opinion what could be the reason for such success? What are the models for such a quick and effective attraction of subscribers?
Here is an example of a group - https://www.instagram.com/wildphysics/?hl=ru
There are also other topics.
I know different ways to promote groups, but here I can’t track the patterns yet. They don't even have captions or hashtags on many of their posts.

Answer 1

cheat
well, you can dream up look legal

Answer 2

Normal activity to close the page, it is a hundred years old

Answer 3

There is a site where you can buy instagram followers with open accounts for a fee. It is not expensive, but the account rating rises at times. This service can be purchased on the Capitansmm website. com/ru , it can be easily found by typing the domain into any search engine, for example, Google, Yandex or Bing.