Bot Quality followers do not have profile pictures and posts. Bot accounts are not used by anyone.
The Instagram algorithm usually deletes many of these accounts and it's called 'drop' in the SMM world.
-Instagram Followers-
1- Refill button enabled services
2- Old accounts services
3- 15 Post-sharing account services
4- Real Look services
5- REAL
You should give priority to these services.
Do not use bot services without testing, first find out how much has drop.
I hope we were able to help little.
Thank you.