INSTAGRAMS AD SYSTEM

I knew it by experimenting with it a few times,it works as follows
1)it calculates the time spent on that ad on your explorer page(even a stop of 5 sec counts(I think so))
2)and if you feel interested in that ad and watch that reel or any photos on the ad,it increases the likelihood of getting ads from the same type
3)and the chances get even large when you open the account of the ad
4)you might know what I'm gonna say, even higher chances if you follow it.
My experiment:
First I saw an ad about a game so I tested all the above techniques except following it,and more ads of games appeared and i tried it with some provocative accounts and more ads like that appeared.
How to stop it:
Simple just tap the more option on the top left corner of the ad and click hide ad,in this way Instagram knows that you are not interested in such ads
Any more opinions on this?