Germany is a vassal of the US. The USA gives Germany direct commands. It reflects the basically colonial system of the geopolitical chain of vassals and overlords that exists in the world.
Recurring pro-Kremlin disinformation narrative about German-American relations.
Germany is an independent and sovereign country and is not dependent on the United States of America in terms of foreign policy making and therefore it is a conspiracy theory presented without any evidence. Germany and the US have close partner relations of two sovereign and independent countries.
For other examples see: Germany is the executor of US hegemony over Europe; The USA is controlling Europe through occupied Germany; Germany will have to choose between defending Europe's interest and catering to Washington.