Personally, I just find myself more and more inclined to stay to my own circles—I find stuff I like, read it, make friends, read their stuff, if I like it, I keep reading it, not expecting reciprocation. On Wattpad, I do clubs to get the minimal amount of movement on my novels in hopes that the algo catches them. If it doesn't, I keep going.
On Tapas, I leave it to Fresh and cycle my novels between genre, to see where it will get most subs and reads.
In the end of the day, the stuff that could grow, does. There is no algorithm in the world that would make people read a boring book in an unpopular genre written in a heavy language.... so the goal is to write a fun book in a popular genre with a fluid/alive language.