Schulz is crashing all over the place and his potential coalition partner (our far left nutjob party) just had a terrible, terrible party conference.
You have no idea what "far left" even is and your attempt at declaring people insane you politically disagree with is disgusting. Die Linke is an ordinary, social-democratic left-wing party with some socialist holdovers that don't play any significant role anymore. You are just one of the people who fall into the trap of declaring completely normal leftwing-policies "far-left" because Greens and SPD have shifted hard to the right over the last ten to fifteen years (The Greens are now a eco-conservative party with some socially liberal positions) Especially, no, just because the Schulz-Train briefly happened because he spoke about social justice without ever being concrete, the SPD is still the very same hollowed-out, pointless, CDU-light centrist party that has no idea why it even exists anymore.
Die Linke is no more leftwing than Corbyn or Sanders are. Whenever they are in government, like in Thürningen, Brandenburg or Berlin, they actual do very solid work, especially in Berlin where, thank god, the corrupt and incompetent Berlin-CDU finally burned and crashed for good and for a change the government implements policies that doesn't just benefit the landlord and property lobby.
Their stance on Russia is dumb and Sarah Wagenknecht sucks, but can mainly attributed to older, geriatric folks from the West-Germany factions of the party that hopefully die out in time, and Wagenknechts questionable strategy to turn voters away from the AFD. Katja Kipping for example has a reasonable stance on Russia.
Ultimately I would love to have a new leftwing party without the baggage this one has, but there are no signs of a new party anywhere, and right now would just further divide the left.
In general, could we please not fall into the trap of declaring everyone a saint who isn't as bad as Trump? Merkels still leads a economically and fiscally conservative party with no interest in a substantial reform of the EU and its institutions, has a hard-on for austerity, still is against gay marriage and struck the disgusting, inhuman deal with Erdogans terror regime. And most important, in Germany, YOU DO NOT VOTE FOR THE CHANCELLOR, you vote for the party. And substantial amounts of the CDU are far more to the right than Merkel and her team, not even speaking of the racists from the CSU. The party will without a doubt shift to the right again after Merkel is done.