Sorry for my late answer, but maybe I'll leave this in case someone might find it helpful.
One thing to consider is it's rarely just a '"post and wait" game. Use social media platforms to promote your work, engage with your readers and other writers. Participate in writing contests or groups...
Most stories usually have romance, which usually gives them very interesting, compelling, narratives and subplots. Most friendships in these novels end in romance.
I want to write a satisfying friendship that has no romantic elements.
Any ideas?