We don‘t support Ukraine because we‘re very good and selfless people. We support Ukraine (still too little!) because we don‘t want the Red Army at the Rhine.

That's a fair point, but kinda moot from my perspective considering the currently polling party results.

Both the Left part and AFD are essentially just going to sell Germany out to Russia, and the remaining parties are seemingly too inept to change the trajectory.

I think that portion of the Left party split off and made the BSW party.

Russia also has huge interference in German politics since that controls wider European politics.