Correct topic. and narrowing interests. making sure that topics are somehow related.

when I see people posting about crypto, poems, sport, traveling etc. then I have impression that they dont know who is their target group.

I believe that to write on steemit about steemit is actually a good plan ;-)

When i see fiction - I also just scroll down very fast. Because I know what Im interested with.
Steemit if full of those who are passionate about crypto, blockchain and steemit itself. So those topics will be always great here.