The motivations of the US are independent of the motivations of Ukraine. Ukraine is not fighting to benefit the US by taking down Russia, but rather to preserve their own independence. This is why it is not a "proxy war" - the US acting to help its own interests does not make it into one. Otherwise every single war would be a "proxy war", making the term useless.
You continue to conflate the actions of Ukraine with the actions of its allies, by using the passive voice to remove Ukraine's agency. This is directly in line with the Russian imperial propaganda narrative that wants to brush aside the idea that Ukraine is an independent country.
Also, appealing to the tyrannical nature of the US-led financial system is fallacious here, as being economically oppressed is much nicer than being militarily oppressed. You keep throwing out these "deaths" as if they've only occurred due to Ukraine not surrendering, while Russia's liquidations in the occupied areas demonstrate that Ukrainians are actually fighting for their own lives.