1. Stop using bots, automated growth tools, and buying followers
Instagram can tell when you leave automated comments on profiles of potential users and follow and unfollow many users in one day. While these methods increase followers they keep engagement painfully low. Even if you haven't been punished for using these methods you're hurting the reputation of your brand. 100 dedicated followers is always better than 10,000 users who don't care about your content.
2. Change up your hashtags up
We all get into the habit of using the same old tried and trusted hashtags for our brand. Get into habit of refreshing your hashtag lists often. There is a list here of hashtags that Instagram has banned due to spanners. Make sure that you aren't using any of the ones on the list.
3. Avoid all growth hacks
Now is not the time to be breaking Instagram's Terms of Service as it appears that Instagram is in crackdown mode. Some users adding 30 hashtags to a comment and then 30 hashtags to their caption so that they can have 60 hashtags on one post. This isn't super effective but it is a loophole that many users are getting around to up Instagram's hashtag limit. However, if you simply follow Instagram's rules you do not need to worry about the possibility of being shadow banned.
4. Take a break for a few days
If you've decided to ditch automated bots, delete broken hashtags, and forget about growth hacks, you will need to take a break for at least two days in order for your account to reset. Once you reset you will need to manually engage with your audience if you want to see growth.
5. Follow the trusted "3 likes, 1 Comment Formula"
This is a method that bloggers and marketers have created to drive engagement. Its premise is that you have to engage with others in order for them to engage with you. Start off by finding users through relevant hashtags and location search. When you like and comment their photos you will show that you have genuine interest in their lifestyle. While this takes time it can bring you followers that find value in the content you push out.