For a lot of myths we don't exactly have a single "canon" version to have said details because said stories were retold a myriad times with a myriad variations. Theseus used a ball of string to find the minotaur and killed it. All the versions of that story include such broad strokes. But how did the fight go? One storyteller has the minotaur break off a horn on the wall trying to gore Theseus, and in an action-packed duel Theseus uses the horn as his own weapon and eventually stabs the minotaur in the heart. In another version he's more akin to a superhero and grabs the minotaur's horns, stops it's charge by planting his feet, and breaks the minotaur's neck with his bare hands because he's just that badass. A third storyteller isn't actually interested in the action and glosses over that part in just a couple of sentences in favor of having a steamy love scene between Theseus and Ariadne.
Part of being myth is that the fine details vary according to the storyteller and only the broad strokes continue generation after generation.