Seems like a stretch to say Germany wants Russia to invade Ukraine...
Also, that's the reason why Germany was relying on gas from Russia. They are not idiots. It was not a stupid single point of failure, but geopolitics.
Geopolitics pits Germany and Moscow as geopolitical rivals, as they’ve been for centuries.
If the goal was building an alliance, letting one side unilaterally cripple your industrial base without similar unilateral counterstrike options is a strategic blunder. Berlin can’t do much, unilaterally, to Moscow. Even if we assume the Lisbon-to-Vladivostok theory, the gas reliance doesn’t make sense.
Only when the land between Moscow and Berlin is subjected to either state (division of the Polish–Lithuanian Commonwealth, Molotov–Ribbentrop Pact)