RANT: Potty training a 3yo boy is actually insane

Why does he think the toilet is a target? How is pee getting on the WALL? We bought a step stool, a seat reducer, books about it, underwear with his favorite characters. Still comes home from preschool with accidents 3-4x a week. I'm not mad I'm just... tired? And confused? Other parents make it sound so easy but nobody talks about the hidden costs of cleaning supplies I'm going through. If anyone has actual solutions (not Pinterest stuff) I'm listening.