When I clicked on this story, I was expecting to see some so-called "secret sauce" or fake tips that most write about.
To be honest you just CAN'T predict what goes viral and what doesn't. You write, publish and what happens happens.
Love how you said you love writing and making money by trial and error. I am in for the same.
I have noticed this pattern though - most viral articles were written in less time and without overthinking.
I feel the reason is we tend to be more raw and genuine with what we are expressing and that's something people love.
Congrats on your success! WIshing you more!