I don’t know if I want to harp on them too much, die Linke is pretty much only a thing in eastern germany. The west germany has basically suppressed them heavily, first by what some historians would call a ‘colonization’ of east germany due to just how fucking bad reunification was for eastern germany, as well as deliberate neglect by western germany letting the situation spiral out of control. A lot of Die Linke politicians were also illegally surveilled and harassed and were often smeared as red fash using horseshoe theory stuff.
This leads us to now where they just suck like they are to the left similar to how AOC is to the left of Biden unable/unwilling to do anything so they’ll keep losing ground to the AfD they’ll not get anywhere.
Germany is not alright and Bavaria is the least alright , nominally leftist parties barely get up to 10% in elections there so yeah was to be expected.