Your fiction is better suited to RR. I see a clear disparity in engagement between your fiction on RR and SH. You've even received reviews on RR. You should be more grateful. At least you have readers on RR.
It's difficult to balance engagement between these two platforms due to the issue of compatibility. Many fictions on SH or RR get little or no readers, favorites, ratings, or views even after hundreds of pages have been written over months. If your measure is popularity and pursuing monetization, then low engagement can indeed be considered a failure.
However, if you don't pursue external validation and focus on internal validation (such as inner satisfaction), then the measure of your fiction's success is no longer about numbers but about the determination to continue writing until your fictional premise is answered and completed.