Help with an active pantheon of gods, but multiple religions?

So, in the story I'm working on building, there's an active pantheon of gods. originally sixteen, but now nine. a huge part of the plot being driven by the seven who rebelled and unleashed demons and plague upon the world and are now imprisoned across the world where they can't do any more harm (or so their siblings believe). The remaining nine gods are semi active among the societies, having children and interfering with the lives of mortals when they feel motivated. I'm having problems with how other religions in other cultures can exist when the core pantheon is active in the world. below is a brief explanation of the religions and cultures to provide extra insight.

Humans have fallen from their golden age after their hero/demigod united all the kingdoms against the fallen gods' demons. a few generations after his death humanity fell apart into small city-states that all worship the nine remaining gods, and persecute the cults that worship the fallen seven.

Elves have two cultures. the desert dwelling lighter skinned elves worship one god who isn't in the pantheon and are reaching their apex, working on spreading their religion. The darker skinned elven culture that lives in the ashy wastelands near their cousins are anarchistic and tribal, worshiping (depending on tribe) one of three of the fallen gods.

Dwarves worship a single god, who is in the pantheon but they use a different name.

and then the gnomes believe that religion is ridiculous waste of time.


I'm not sure how to make the elven religion make sense when there's obvious interactions in the world from multiple gods. Any ideas/tips are greatly appreciated!

 

I was intending for the elven god to be nonexistent. but the idea of him being one of the fallen gods trying to gain power again would be interesting, since one is buried in their desert. As for the gnomes, that is a good point. They're culture is all about the pursuit of knowledge, both through inventions and arcane, so im thinking the god of magic (Who is the chief of the gods) and the goddess of wisdom are protecting them hoping they'll see the light now that the gnomes are interacting with the continent the others inhabit. either that or the gods are too weak to eradicate a whole race after the war with the other gods and trying to keep the armies of demons that are still wandering around from completely destroying the rest of the world.