It's been a while since I wrote it but I think you need to both put on the mask at the beginning and feed the fire twice.
Also check out the sound and feed the creature in the next few choices because not doing that will get you killed by something else much later into the game.
Thank you for sticking to it for this long despite how overly convoluted I made it, there were even times when I got a bit confused by the code since I set up way too many death flags at the beginning 😅
Edit
In case you need further help, I made sure to attach a walk through txt file In the zips of the PC and Mac versions of the game.
I should've probably also zipped the APK so I could add the walkthrough inside it too.