I knew something was very very wrong when Rey beat Kylo Ren in the first film. Wounded or not that should not have happened. It also really didn't help that Rey was an expert at everything. The whole point of a Hero's Journey is that they leave home for the first time, discover the world, and have potential, but little skills. Then over the course of hardship, failure, training, education and battles, they obtain power and grow in wisdom, until eventually he or she becomes the hero. But in the Sequel Trilogy Rey was already competent and effective at fighting the enemy. So how the fuck does the hero grow at the point?
They don't.