Comparing Russia and China, Russia is far more similar to the USA than China, not saying that we should be close allies with Russia, but we should be enemies either.
All we’ve done is push Russia close to China which is incredibly shortsighted and stupid.
Never forget that one thing driving China’s motives is their fascination with what they call the century of humiliation. Their leaders will do just about anything to get back land they lost during that century (as well as other things, like get even with the west for the 1st and 2nd Opium Wars).