Can someone smart tell me how to profit from this if I believe this (plus everything else) is going to spiral into huge crisis?
The best way to derisk would be to get out of the US and surrender your citizenship. But the alternatives may not be all that much better (France has marginally lower debt to gdp, japan has much higher, to give two examples).
Classic answer would be: buy physical gold. Another, much more risky path: get into as much debt as possible: a fixed rate mortgage to buy a second house perhaps. Once the US get into hyperinflation that $1M will be less than your monthly salary. Sounds ridiculous, but something similar has happened in Poland in 1989 and I know of people who basically got a free house this way.
Go ask a (capable, preferably open) LLM. If it doesn’t give you a direct answer it will give you enough of a starting point to start asking more questions.
(This is not financial advice)
GenX/Millennial retirement communities abroad. There won’t be any SS funds left for that generation so they won’t be able to retire in the US.
In all seriousness - this level of debt will probably require somewhat high rates of inflation to reduce. I'd expect the inflation baseline to be relatively high over the next few decades.
High inflation helps those who borrow with fixed terms. If you have a mortgage, don't pay it off. Don't pay off low interest rate debt. Consider acquiring a responsible amount of low-medium interest rate debt. Put your money into stocks and other assets that will appreciate with inflation.
If you have to ask, you’re too poor or powerless to properly profit.