Your post kinda sounds like the perfect mix of depressing and beautiful at the same time
Sums up Yerevan very well! The beautiful Soviet era architecture which has decayed alongside their courtyards which were once beautiful green spaces teeming with life. Now empty and littered. No longer are the streetlights around them functional. Dark spaces, cold and unforgiving. But areas of life and connection still present in other areas. Sometimes it's the elderly playing nardi in those sad courtyards. Sometimes it's markets where sometimes throughout the year the city wakes up a bit and finds something to do.
It's an odd atmosphere for sure. A jungle of concrete that once had so much to say, as if to be roaming around a former civilisation that few others take note of.