If you own the game you can read the source code by extracting the .exe as a compressed file. It's all written in lua. It's also terrible code so good luck reading it.
I took the time to decipher the mess and both Wheel of Fortune and Glass cards check what is essentially
if math.random() < 1/4
Here is the actual source code for the Wheel of Fortune check.
I'm pretty sure the game is rigged, but not for random chance, just what options it randomly selects to give you. I think you're seeing negativity bias.