If you want to reflect on violence in games, MOON Remix RPG Adventure could be a good call. Its graphics look a bit outdated, but besides that it is a good game.
It also inspired Toby Fox, creator of Undertale, a lot.

https://www.youtube.com/watch?v=jTkGd9zvNM0

freebookspls

If you dont want to kill stuff, some genres can interest you:

gaming

Games that you can complete without killing anyone

riberet19

If you dont want to kill stuff, some genres can interest you:

- stealth games (some let you complete the game without killing)
- sports games
- simulation/tycoon games (in some games you may kill people but you'd be punished by it)
- idle games (cookie clickers), but I wouldn't recomend it to children, or people with obssessive tendencies.