@Weydemeyer Here's my plug for the kid-friendly game @Janvanhouten and I released a few years ago: SODALITAS. It was crafted to play short sessions with too many teenagers, and works as fine with younger kids. Essential rules fit on a single page, and some tools come with it. If you like it, we also have 15 Adventures on a Single Page you might enjoy (there's a bundle if you want everything).
https://jdrcool.itch.io/sodalitas