I will say instagram can also be linked to as almost the same thing with steemit.
If you want get a lot of followers on instagram, try to make quality post on instagram, let people know your brand and let your brand interest many people on Instagram.
Also try to make good valuable and quality comments on people post, by this they tend to appreciate your comment by even following you back.
Actually there is another last method which I don't think it is the best, some people use follow and follow back. By just following a large number of people on Instagram, there is always a tendency that may help you to be followed back bit the disadvantage is that it sometimes actually create non genuine followers back on Instagram.
With these above tips, it can help to acquire more follower on Instagram.
Any platform requires great content to display to develop your followers!
Here are some tips that can help you!