I'm with that the question of scale is very, very important. [edit: LOL, forgot I'd already mentioned it!] Graeber & Wengrow (Dawn of Everything) pulled together a bunch of research on there being plenty of past, larger societies which did not yield self-/other-destructive habits. But we certainly have a lot to learn about living together, especially in the large groups/networks/etc. we now have. Participedia is a good source for things in that direction. Mini-publics, citizen assemblies, sortition, a variety of good facilitation methods, online tools such as Pol.is, are all ideas/areas that explore how to do better at this. Healthy Democracy is one of the larger organizations working on related stuff in the USA, a smaller one I'm involved with is https://www.co-intelligence.institute/
Their Wise Democracy deck: https://www.wd-pl.com/
Deck about group patterns: https://groupworksdeck.org/
It's not that I can't find any, because I can. It's that I was hoping to learn about more.
Thanks I am very, very familiar with our destruction of much of our ecosphere, even inching our mess towards the heliosphere! This post was seeking out additional inspiration/information.