Please help me understand this.

"US joins Russia to vote against UN resolution condemning Russia’s war against Ukraine"

https://edition.cnn.com/2025/02/24/politics/us-joins-russia-ukraine-un-vote/index.html

"The US had introduced a rival General Assembly resolution, which did not call Russia the aggressor or acknowledge Ukraine’s territorial integrity."

I thought that USA under Trump was supposed to be all about selfishness, but now it seems it's more about being a tool for Putin? Not "America first", but rather "Russia first"? Trump is Putin's puppet?