>>4740212911-year-olds and other preteens are canonically the strongest trainers, going by the games. I mean, think about it: you're only a child for a few years, while you're an adult for decades, yet children are over-represented in the champion lists.
Not sure if this has anything to do with your dad being gone (except in RSE), if trainers just have a high burnout rate, or if kids have some sort of edge.