I think you’re gravely exaggerating the significance of the iran war we currently have. The resources brought to force and the scale of losses are miniscule, and there’s no grounds to even say what “winning” is for either side.

That’s entirely aside from the point though. You’re arguing the a crack in the facade of hegemony is more responsible for emotional distress than a stark reminder that your next door neighbors are horrible bigots. That people should be comforted that people they don’t know will lose power.
Will Trump losing power make my neighbor not think we should hang trans people?
Will a loss of US influence in global affairs cause us to build a social safety net?
Will embarrassing the US military spur a wave of environmental reforms?

The answer is “no”, because why would it?
I think you’re thinking about global politics a lot, and assuming it must be on everyone else’s mind as well.
I don’t think you actually know why people are exhausted and depressed, and you sure as shit don’t know what would improve that.