You've never been in Russia. There is no clear law abiding business there. That opens a lot of opportunities for those with some power. Corruption is one of them, selective punishment is another. I'm sure in most 3d world situation is not better, but they at least don't have laws to cheat and bribing isn't a crime.
The funny thing, is that people not from America say that there IS corruption, but at least it happens in the open. I think OP is saying the same.
How is that corruption?
A good definition from AI "Is when government officials misuse their power for personal gain or to benefit their friends or associates"
See for example Trump’s shenanigans, which are done in plain sight for all to see, but with few if any repercussions (a very brief selection: having foreign dignitaries stay at his hotel in DC while he’s in office; having the Secret Service stay at his resorts when he goes golfing; scamming the public with his family’s meme coins; etc)
I thought you were being sarcastic here at first because, good lord, there is plenty of corruption here in the US (though those doing it used to care more about hiding it). The US, especially in its current state, is certainly not a place I'd describe with "almost no lying or cheating". I do understand that Russia is on another level, though, given the open assassinations and doing things like what was done to Navalny.