This comment doesn't make much sense. Are you implying German taxes are buying Russian oil and so funding the war in Ukraine? If so, that's a very partial reading of what's happened in recent years. Europe went through a huge and very painful transition away from Russian oil and gas. Germany in particular found this very difficult, but AFAICT it's mostly complete and Germany has prioritised renewables.

Energy is currently expensive because an orange maniac has started a war that only seems to benefit Russia.