There are many indigenous tribes in Brazil for example (still surviving in more or less pre-colonial territory). I'm very far from a specialist (and specialists do exist), but I know there are many different attitudes. Some tribes have known technology but don't like it. Some use smartphones and wear clothes (usually those have some economic activity I guess). Some have an inbetween approach, and the leaders are reluctant to let technology in (it's interesting in Brazil usually the role of spiritual leader is different from the "executive leader" afaik, it's the Paje (more spiritual) and the Cacique (more executive)).

So it's a reality many actually don't want to mix with civilization.

I haven't gotten to read it yet, but I highly recommend Ailton Krenak's book "A vida não é Util"[1] (Life is Not Useful) and his other ones, he discusses some of those questions as an indigenous person.

Also, really most tribes in Brazil are in existential danger from many activities, specially illegal logging and mining. One significant role they perform is defend the forest since it's their territory and traditional livelihood.[2] Differently from elsewhere, tribes in Brazil are quite unique because many have been agricultural in pre-colonization times (I believe cassava is the staple crop generally), and have unique cultures like music, languages, garments and dishes.

But generally each tribes has its own unique culture and history and we cannot generalize much (some are more violent, some much less, etc. too).

[1] Seems to be available on Amazon: https://www.amazon.com/Life-Not-Useful-Ailton-Krenak-ebook/d... (This time Amazon's name is fitting :) )

[2] Brazil has quite generous indigenous reservations I think and we generally quite value indigenous people culturally, but we are struggling to defend most forests from criminals and, what other word to use, evil business interests in the region.

(One significant cultural movement is Brazil from the early 20th century was the idea of "Anthropophagy", which is to value all cultures and learn what we can from them, absorb ("eat") what's good they have to teach us)