@tshirtman you can look at different regions ranging from the Middle East through the engagement with the Pacific nations to see how US alliances grew at the expense of Russia's during the Trump years.
It's unfortunate that Biden dropped the ball on those efforts, but he seemed far more interested in domestic policy than international.
International energy policy is probably the simplest way to view it, as the US promoted itself as a source for trade to displace Russia under Trump but receded under Biden.