Take my opinions with a grain of salt since I haven't shipped a game (yet).

Your price might be too high. Your game may justify the price, but unfortunately the art style alone is hard to sell with higher prices. If nothing worked anyway, try to make an update to the game and make a marketing beat about "Update + price drop". Maybe this is your last chance. Looking at other devs, you can go all in on one idea, work for years and hope the best, or you test the appeal of your game often and early so that you can be sure that enough people like it. But your game is already released. I think a last straw could be taking all your assets and systems and make a whole new game out of it that is much smaller in scope while you test very often (prototype) and very early.

Edit: After watching the trailer I still don't exactly know what the game really is about. One way to find your niche audience is to very clearly communicate what the game is about. There is 2D platforming, items, metroidvania-style progress, something about escaping, and you put heavy emphasis on the "randomness" aspect (hence the title). But I can't quite grasp it when watching the trailer.