VVER reactors have an overall good safety record so far, the trouble is this one seems botched.
Also, the blocks 5-8 in Greifswald were modern VVER-440/213 which are far more reliable and safe than for example the SWR-69 reactor types used in Neckerwestheim I, Kruemmel and Isar 1 which were all in operation until 2011.
Which was completely unjustified. I visited that plant and the engineers there confirmed me that the VVER-440/213 is safer than all the BWR designs in West-Germany.
WWER-440 has no closed safety vessel, poor emergency cooling and no redundancy to speak of. It is a PWR design that is maybe on par with a poor western BWR. Also, all the reactors in West Germany were continually retrofitted, especially after the lessons learned due to Czernobyl. That wasn't feasible for a Sowjet design during the breakup of the Sowjet Union (while a lot was built in the GDR, there was also a lot that would have been imported).
Not sure about the other ones, but the ones in (East) Germany were decomissioned presto after reunification: https://en.wikipedia.org/wiki/Greifswald_Nuclear_Power_Plant