Engaging with your community on Instagram is one of the key components to properly grow on the platform. (It's not the "only" component... but it's part of the recipe.) Not only does it help you emotionally connect with your audience, but it also puts you in good standing with your algorithm. You see... Instagram's algorithm is like a house plant. You have to regularly water your plant, otherwise, it won't look its best and might even die. #Instagram works the same way. If you're not actively engaging with your community & "watering" your algorithm with good data, your engagement will eventually die.