There are a few things you can do to determine if someone is following you back on Instagram. First, check to see if they have followed you back in the past. If they haven’t, it’s likely that they are not interested in following you. Second, look at their posts and see if they are following any of your other accounts. If so, it’s likely that they are interested in what you have to say. Finally, look at their followers and see if there is a high concentration of followers. This means that they are likely following other people who share similar interests or who have influence over them. If someone has a high concentration of followers but no followers among their own followers, it’s likely that they are not very popular or influential on Instagram.