Magic Initiate Feat and Arcane Fist, but no spell slots or ability to do spells.

In one of the featured Fable games, the class of the Monk has the Arcane subclass, which allows for spells like cantrips like Mage Hand, Elementalism, and the Prestigitation cantrips. Along with that, I took on the Magic Initiate feat, and I imagine I'm not taking the Initiate feat. Those come with one spell and two cantrips, but yet I have no ability to add spells to my character sheet, and I'm playing a tiefling monk, the character I created. The AI said I could just give it the names, and it would track it. During combat, it caused an error because the encounter engine or whatever couldn't utilize it because that wasn't part of the UI.