An important thing is that your followers increase your posts’ engagement. You see, Instagram updates its algorithm every now and then and different rules might apply to how well your posts will rank. Let’s say you publish a post on Instagram – be it a video or photo. At that moment, this post is shown to a fraction of your audience, where Instagram measures all the interactions with the post. This includes not only likes but also comments and shares. If the post continues to have a lot of engagement, it will be shown to a wider audience on top of the page. That way, they have no chance of missing it. Reaching a very high level of engagement will make Instagram show it in the Explore menu where you can reach even those not following you. However, it's very important that the post has initial engagement. In this case, buying active followers that will comment and like your posts can help you a lot. Missing out on initial engagement can lead to your post being less likely to appear to a broader audience, and as such, it won't be recognized by relevant people who might be interested in what you have to display.