Sure, The End will come some day. However, America is an economic fortress. Fortresses come under assault and take hits. But America and her fortress economy stand alone.
Before the Eeyores continue, here are a few things for perspective.
America makes up 4% of the world's population...

...and yet we crank out 24% of the planet's GDP.
And while we are at the top of the Countries that Consume the Most Oil (2020 barrels per day)
United States — 17,178,000
China — 14,225,000
India — 4,669,000
Saudi Arabia — 3,544,000
Japan — 3,268,000
Russia — 3,238,000
South Korea — 2,560,000
Brazil — 2,323,000
Canada — 2,282,000
— Germany 2,045,000
...we also top the list of Countries with the Highest Oil Production (barrels per day)
United States - 11,567,000
Russia - 10,503,000
Saudi Arabia - 10,225,000
Canada - 4,656,000
Iraq - 4,260,000
China - 3,969,000
United Arab Emirates - 2,954,000
Brazil - 2,852,000
Kuwait - 2,610,000
Iran - 2,546,000
Thus, we Americans, making up only 4% of the planet's headcount, produce about a quarter of GDP - punching way above our weight. In relative contrast, China is a joke.
And if THAT wasn't cool enough, America's 4% of the population is at the top of the equity market food chain:

And, of course, we win the gun race by a mile...

....but we're not losing the murder race.

As for the national debt, we have trillions in untapped oil and gas and mineral resources. IER estimated the worth of the government’s oil and gas technically recoverable resources to the economy to be about 8 times our national debt.
There are lots of problems in the US, but did you notice that even the economic doom newsletter sellers always take payment in fiat currency?
De-dollarization is a fantasy of the Harvard faculty, anti-Americans, and fearporn salesmen. Usually, they are cut from the same cloth.
A new contestant has emerged, which is A Person Who Is Worried About America. Fair enough. But America's eulogy has been written many times before. And we will emerge victorious this time as well.
But beware of the Harvard, anti-American salesman-type using FR as a conservative beard.
The country that “makes stuff” wins in the end. We start with protectionist tariffs now or die as a world power.
What you fail to take into account is the bullying tactics of the US against the rest of the world.
When the US wants war with Russia, we demand everyone stop trading with Russia or sanctions fall on you.
By mixing our military intervention foreign policy with our dollar, we are creating massive resentment.
Lastly, learn about how African nations are enraged that they cannot build power plants or infrastructure (unless it is green) because the US is not allowing dollars to be lent for such purposes. Those African nations are being held back from climbing out from poverty thanks to US environmental policy backed by using the dolllar.
This resentment is growing globally.
Your GDP analysis fails to account for the fact that the BICS nations now have a higher combined GDP than the G7 nations.
If they want to trade among themselves and the rest of the world in other currencies, they can do it. As more and more nations get sick of US arrogance, they will turn away from the dollar.
Except there is this figurehead meat puppet POTUS who is doing all he can to destroy the US currency. I hope he fails. But he’s a busy little beaver, or rather the people for which he’s the figurehead are a busy little beaver.