If you observe a drop in your following frequently, all the effort you put into creating your content becomes futile. You need to keep track of the engagement of your followers and the rate of your growth. If you want to try to improve your follower growth rate, look into the likes of this Workmacro info or alternative Instagram growth services.
If you upgrade to an Instagram Business account, Instagram also offers detailed analytics, or you can use the various apps available. It will give you a detailed insight into your performance, the loopholes you need to fill, and the strengths you need to polish.
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