Sigh. I won't say you're wrong about all the negative developments. However, my suspicion is that the good 'ole US dollar is not likely to be dropped as the leading (fiat) currency anytime soon, since the US economy, even if it takes a few nasty hits like you cited, it's bigger and more stable that any other. While certainly flawed, it's probably less flawed than any other economy in the world.

As one possible mitigation, you could probably do worse than putting at least some money into BTC, either directly and in a cold hardware wallet (preferred), or via a spot ETF. If you can, doing it inside a Roth account would avoid any taxes if it goes as high as many expect it to over the next couple of decades. Or, BTC could fizzle to zero (unlikely IMHO) so don't put more than a few percent of net worth in it.