Thank you so much! I made this a long time ago, so I don’t really remember everything. But after reading the code and playing it, here’s what I found (I’m not sure which coins you’ve already collected):
There is one coin in the left forest, one in the deep forest (which is inside the left forest), one inside the area where the dog is, and one coin that you can get by answering a ghost’s question. The question has two possible answers related to the storyline, which you can learn about by reading random wooden posts.