No suggested users have followed me back

Yesterday I decided to try to follow all the suggested users by liking really good photos and leaving genuine and sincere comments. At least one of them would follow back, right?

Zero followed back. I am ok with this because I already have an audience I love. But if you are a new user what are the chances of getting a follow back?

As it turns out Instagram wrongly detects a genuine interaction as comment spam. If a suggested user is following 100 or so people or less & you try to leave a comment you get this:

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I eventually stopped following suggested user accounts because the ones left had photos with just text in them. I was really boggled by one of the suggested users that was just selfies with text.