Social media is constantly evolving and Instagram is proving that point with it's new features on the latest update. First, you can now highlight a segments of your story on your page so people can see that one specifically. Also new, you can now follow hashtags on the app!
Following hashtags allow you to stay up to date with your favorite topics, whatever it may be. Instagram users can search their favorite hashtag like, #dog, #slime, #baking.... whatever it is, then "follow" it. That will then allow it to be featured on the top of your main page in the Instagram Stories section. \
Instagram filters out the posts, highlighting the best ones based on best reactions, most recent postings, followings and quality. You can also downvote posts that you feel don't fit the hashtag!