The state became too big and chaotic; the influence of money and private interests corrupted public institutions; and social and economic inequalities became so stark that citizens lost faith in the system altogether and gradually fell into the arms of tyrants and demagogues.
All of that sounds very familiar, doesn't it?
It does. But this is where your misunderstanding of the US Government founders fails you. Your education system failed in educating you properly. I suspect only an outsider like myself can see it.
Unfortunately for the country the US passed the 17th amendment. This destroyed the founders and many other historical figures understanding of governments.
After the 17th passed the path was inevitable.
Polybius argued that regimes were in an endless cycle, and the three basic forms of government are destined to degenerate into their lower forms " and lead back to anarchy.
But there's a way to fix it...
To break the cycle, you need to combine elements of each system. Polybius admired this in the Roman Republic:
Consuls (monarch-like leaders), Senate (aristocratic body), and Assemblies (democratic element).
threadreaderapp.com
It is a the sweet siren of "democracy at all costs" that lead to this downfall. History is your guide, Lumpers ignored it.