pcr speaks about why countries collapse and provides some thought on the subject you may not realize;

Dmitry Orlov and Vladimir Putin believe the US is failing, because the US government, in Putin’s words, is “making sure-footed strides directly along the path of the Soviet Union.”

These strides are, in Orlov’s words: “exorbitant debt, problems in the energy sector and unreformable political systems mired in corruption, their elites delusional in their feelings of omnipotence. And now comes a truly eerie analogy: the powder keg that detonated under the USSR was ethnic nationalism and separatism; and the powder keg that is currently detonating under the US is “woke” (anti-)racism: another brand of ethnic fascism but with American characteristics.” https://www.lewrockwell.com/2021/06/dmitry-orlov/putin-fully-agrees-with-me/ 

I don’t deny that these problems afflicted the Soviet Union and afflict the US today.  Certainly, such problems, if not successfully dealt with, could bring about failure.  However, in my view the Soviet Union collapsed because the belief system collapsed.  The United or Disunited States is collapsing for the same reason, as is all of the Western World.  Whether Russia joins this collapse as well remains to be seen.

The Soviet Union collapsed because communism did not produce the plenty that it promised, or the freedom, and frustrated communist reformers were sick of the system.  Dissidents were punished, at times severely, and propaganda was used to control the narrative as it is used today in the US.  The remaining threads of belief were cut when hardline elements in the Communist Party placed President Gorbachev under house arrest.........read more.......