Need help with Instagram Mass accounts

Hey. I am running instagram mass account one month and half so far. In the start the things work good but now have such an annoying problem that I cannot fix.
-I don't get suspicious activity
-0 pva
-follow up to 150 users per day
-the profile are setted up with one sexy girl per profile (2-3 pic)

The problem is that I have a very very low follow back rate (5-10%)
I tried to follow users that interacted with sexy babes account post, and after that with big sexy models pages but the follow back ratio still remains the same.
I tried so many tests but can't make this works again.

Do you have any tips how I should thing work ?

Thank you.

Imorove your targeting and content.

Find accounts which grow with more than 1000+ followers per day.
Follow their likers or followers.
make your accounts look genuine, it helps a lot.
It works like magic. Good luck!

Seems like a targeting problem, I'm running a few accounts doing pretty much the same thing and I'm getting 20-25% follow back rate.
I'd advise you to target accounts between 20-200k, also I like to use the remove poor quality sources on jarvee, I set it to remove the target account if I dont get a 10% fb fb after following 100 people.