Hunter-gatherer tribes have healthier dynamics than settled neolithic societies ( like ours).

What does that mean, "healthier dynamics"?

All life is a strife for resources. Strife is conflict.

The important question is where you draw the boundary line for the conflict. These groups are fighting together against the environment, whereas we are both fighting the environment and against each other (in capitalist system, everyone is competing with everyone else all the time). Hunter-gatherer tribes basically implement some form of socialism, with little to no private property and cooperation instead of competition.

All true, however those groups cannot survive because colonialists will just genocide them and capitalists will raze their territory in order to build a mine or other infrastructure for capitalist consumption

That's true, however the question was "what are healthier dynamics (than our current society)", not "which dynamic wins out in the long run".

You have to be alive to be healthy at all

Sick is healthier than dead