Eventually, after the collapse, the people that made up that society will find a new equilibrium, because everyone does. You've seen other societies collapse in recent history. The USSR collapsed in this way and became much less complex. Often this ends up being a good thing for many in that society
Collapse of the USSR was a major trial and there was a lot of suffering, but there was also massive liberation and new nations were born (or reborn) and prosper to this day. But those consequences still ripple in our world to this day, with Putin and Ukraine, and will continue to.
And the American collapse, even if we are able to arrest it before too many props are pulled out, will have similar long ranging ripple effects. If anyone tells you they know how the building will land after a collapse they are fooling themselves. This isn't a controlled demolition we are living in.
This is Trump going around and knocking out every support he doesn't like just to see what happens, or just because he wanted to. We may be unable to stop this, no matter how many people of good will and great skill we can band together to try, and we cannot predict where the debris will fall.
What we do know, even if we can stop it and remain a country instead of a disoriented, shellshocked, mourning, angry, bleeding collection of 50 brand new nations, is that like all the people before us who lived through, and lived after a collapse: we will have to rebuild.
We will not have a choice. People will need to eat, babies will need to be delivered, the dead will need to be mourned, housing will need to be built, the future planned for. Because life doesn't stop after a collapse. It gets harder, but there is always a future that we can make on the other side.
For me, thinking through the idea of collapse, wrestling with the very real possibility that it could happen, is how I keep it together. There's nothing really I can do about it now besides what I can, and what I can't do I can't do anymore than you can do what you can't do.
But there is another side. There ALWAYS is another side. We will rebuild because we won't have a fucking choice. And whatever of us make it there, whatever it looks like, they're going to need to be ready to build something new. Because a lot of the old is just dead.