Every band is busy creating posts to attract new followers. And that's fine. But most of them are not creating any posts to better connect with the fans they already have. This is the space I work in, helping bands better connect to their current fans. I think if someone is taking the time to follow you, you should offer them a little more, some posts of substance that give them a little more insight into your songs, your creative process, etc.
So many bands work so hard to attract new followers. But when they do get you as a follower, they kind of ignore you. You are given the option of either buying something or just sitting in the corner and watching them work to get more followers. Their attention is devoted to the people who don't appreciate them rather than to the people who do.
Even when it seems like they are doing something special for their fans, there is a catch. "We have a special behind-the-scenes video for you! And we will show it to you if you first spam people with this message and get us up to X number of followers!"
Instead most of your posts should have the vibe of "We appreciate you giving us your attention. Here is something we thought you might find interesting."