Followers don’t come easy, you have to earn them. One of the things that attracts people is seeing consistency within your feed, whether it’s style wise or because you are really good at something and you post only that.
However posting only works will not get you very far, you need to be active and engage with people so that you can create relationships that can help you grow as a designer and not only.
You need to like other people’s work and comment their shots where you express your feedback in a nice and constructive manner. Other ways of engaging is saving shots to specific buckets for later inspiration. One way that I used to practice and still do is heading over to the New & Noteworthy page and be active there, if you see that someone is New to Dribbble and has posted a “Hello dribbble” shot, be nice and welcome them to this platform, chances are they will more likely follow you or engage, if they find your content relatable to them.