Being serious, the demographics of what is coming are beyond catastrophic. People that have the ability to leave and are under 40 should by 2030-2033.
If staying, the average person should prepare by educating themselves and practicing skills they will need before the need becomes life sustaining, and accruing the needed resources and experience on how to make the things they will need themselves; from scratch. The level of learning that is going to be required is beyond what PHd's can manage. We're talking practical working knowledge of chemistry, material science, engineering, agriculture, and medicine (without all the technological dependencies), and tactical/military guns & ordinance for defense. This is not as unusual as you'd think, as these skills are often needed in places outside the US. The best and brightest will leave, just as they did prior to Hitler's rise to power.
The ones that stay will not be able to afford basic necessities and the cost of living is going to explode following rent-seeking behavior as the old offsets.
Laws will be changed to a rule by law, the prospects that stay will most likely have to become outlaws to survive and have the means to do so forcefully.
There is a very good chance order breaks down when worker shortages cannot be corrected, production falls, and austerity measures are imposed.
Employment will become quite scarce, as money-printing gets worse. Food may become scarce, and the ones at most risk are the younger ones because they weren't given a choice and won't recognize the dangers in this chaotic environment.
To give you perspective on the hard numbers.
There are only roughly 340 million people in the US a/o 2025.
119.3 million are above the age of 50 (35%), and their chosen leadership control the majority of political power and monetary resources to the point where the remainder of the population have very little voice. They will follow the same flawed path of the history books, holding onto it until age and circumstance take them. This isn't a new development, its been this way since 2000 when the generational shift which was supposed to occur in politics didn't.
That leaves 220.6 million to make up for the boomers, and their spendthrift policies (64.8%) to pay those IOUs the boomer's policies have forced on us all and have been printing for the last 50 years... but wait, not really.
82.4 million are under the age of ~18 and can't work, and likely won't be able to work at the same production level given the poor schooling they received and degradation brought on by lack of reading comprehension.
So in reality your national workforce is only 138.2 million (40% of the population), and that same population accounts for ~80% of the birthrate which must have at least 2 kids for replacement breakeven but they can't feed/shelter themselves independently. We are at 1.67 and worsening. This same group must also somehow work at the same time to make up for the other two thirds, with narrowing prospects over time because the debt trap was set before they were ever born.
Those that don't leave will be forced to work, and they won't be able to have kids without resources which are being hoarded and stolen by the old who have enabled corporations to do this on their behalf and engaged in political capture to prevent change. You can either have these people work, or you can have them make babies; you can't have them do both.
The dynamics are worse than Japan if you shift&match them up to the same progression, and the US bailed japan out a number of times. No ones around that will bail us out, we're at the top which makes the fall all the more painful.
All signs point to dramatic depopulation event, complete loss of purchasing power from runaway debt service, and negative replacement rates as the spiral worsens and inflation/debasement come home to roost.
The bill from money printing always comes due, the boomers chose to have their children pay for the extravagant lives they lived at the expense of everyone else. There are exceptions because its a spectrum, but overall these are the choices their generation made in aggregate.
I haven't even touched on the silent crisis of 30+ years olds (both men and women) today who aren't having sex at all. The numbers for this demographic are hard to come by, but its almost side-by-side with singapore (0.8) if you take some less firm numbers.
The dating app epidemic is basically poisoning people's minds, and is utilizing the same strategy the USDA uses to eradicate parasites, through structured sterility; for profit.
Contraception coupled with faux matches that guarantee customers keep coming back and are never happy who will never match up longterm with someone compatible; these designs toward profit run down that biological clock just like the above strategy by the USDA (where the parasites referenced have a very short biological clock time-frame).
The only thing that could have possibly helped was increasing immigration drastically. Obviously with the recent ICE roundups and detention facilities being erected, this is no longer an option.
When you fail to plan, you plan to fail.
People who are under 40 should seriously be considering finding safe harbor in any country but here.
Demographics are brutal, they don't change, they don't care, and they lag so by the time you see the problem if you don't pay attention, there is nothing you can do, and people didn't want to listen to the experts at the time when it could have been turned around. Such is the legacy of the boomers.
It will be worse than anything seen in the past 5-6 generations, and we've seen grizzly. I'm not touching on climate change, that also has to be handled alongside 20+ other existential threats in the same time period.
When you kick enough cans up in the air enough times eventually they all land down at the same time. This is the future left to the unprepared, coddled, and hobbled young. The odds against survival are so high.