Who was buying Russian Oil?

I have read that though Germany was buying more Russian oil relative to its GDP than was the USA, the USA was paying Russia more money for oil than any other country.  This is not true unless Red China is paying vastly less per barrel of oil than we are.  Germany and the Netherlands must be paying less per barrel as well.  Just look at the actual amount of oil countries were buying from Russia.

It has been Red China that has made the largest contribution by far to the Russian war machine.