Some of the cause could be from this:
it spoils so much of the experience, so I took a couple random ones to give you some idea without ruining the experience.
I've viewed the shots and none of them inspire me to play. You really need to show shots which show the gameplay. If you're afraid for spoilers then what you should do is make screenshots which evokes curiosity instead. It's not easy but you should try.
That being said, it's really hard to get people to play your games lately. You really need to share it in multiple places.