This is a really cool game but it seems way too easy to get yourself softlocked in the game's current state - I regularly had to reset to spawn and it always felt a bit jank.
I did end up kind of giving up after getting the red and green gem - I couldn't find any way to progress after that. The fountain riddle seems like the only accessible lead but I can't make heads or tails of it - the only "pinkish bank" I can think of is the piggy bank, but there's no arrows in that room, and I can't figure out any meaningful way to use the other arrows in a way that "starts from" the bank? I might try coming back to this later as it seems cool, but after a lot of running in circles with no real direction and finding no more leads or clues I just lost interest for now.