I've included the definition of a proxy war again so we are at last operating on the same definition because clearly you have not understood the first time.
According to the Oxford definition, a proxy war is a war INSTIGATED by a major power who is not a participant.
HOW did the West-US-Nato, or whomever you blame now, INSTIGATE a war in Ukraine?
I can show plenty of things the West-US-Nato did to try to appease Putin and simply ignore his 1st invasion, not really the things you do when you are trying o instigate a war now.
So what did the West-US-Nato actually do, according to you?