Continental countries close to Russia can't import oil through boats very easily.
The Poland was entrapped behind the iron curtain and has a deep resentment of Russian power, but they still had Russian oil infrastructure, that is changing:
jan 17/2022: Saudi Arabia’s planned purchase of Polish refining assets is set to put OPEC's top producer in charge of two thirds of Poland's oil supply, eroding previously dominant supplier Russia's leverage as it grapples with regional tension.
It's Saudi vs Russian oil, out of the pot into the frying pan.
Continental European powers have been a natural allies to avert mutual local threats and against major powers like France was, and have complex ties with Britain and the English-speaking world. Allegiance against the French and in NATO/EU, and total war in WW1 and WW2 due to complex issues like the naval race of the late 1800's, which Prussia contested against Britain.
For example, The Russo-Prussian alliance signed by the Kingdom of Prussia and the Russian Empire on 11 April 1764.
The Reinsurance Treaty, (June 18, 1887) was a secret agreement between Germany and Russia arranged by the German chancellor Otto von Bismarck.
Dreikaiserbund, English Three Emperors’ League was an alliance in the latter part of the 19th century of Germany, Austria-Hungary, and Russia.
Also the toll of 19 million lives in WW2 perhaps makes Germany feel like it has a debt to Russia.
The annual trade between Russia and Germany is 25 to 45 billion.
Honestly, Putin is acting like a paranoid, isolated and belittled mad dog leader intent to show his strength... Lest there be the question: who coerced him to act paranoid, belittled and isolated?
Perhaps a simple friendly series of pacifist statements by Biden would have saved many lives, in the last 12 months of alarmist enmities on both sides.
Recall that Britain led a war with Russia over Crimea in the 1850's, which cost 250,000 lives. The continental/maritime natural power alliances haven't changed very much.