Not for everyone..
But
Good acting
Good story
Good direction if considered as an art movie
Slow or May be very slow
All characters are painted very sad
That make it depressing for most of viewers
What could have done differently
Always some humour required
One of three could have been that character who can crack some satire jokes or cynical comments with humour
Little more pace
May be some young kids teenagers in similar situation
More dialogues