Ukraine is a key example: The US (and the rest of the West) clearly didn’t want Russia to invade. They used every diplomatic means at their disposal to convince it not to. But once Russia did, and once Ukraine’s resistance was successful, they reacted by supporting it.

So, no, the idea that only the US has agency is patently absurd. Do yourself a favour and go read some autobiographies, biographies, and history books that focus on the leadership of other major powers and how they acted and thought during various crises. It’ll open your mind as to how the world actually works.