Who is the responsible for India unsuccessful T20 world cup 2021 journey?

Indian team failed to qualify for the semifinals for the first time since the 2012. Losing T20 World Cup by Indian team it's not a one person fault cricket is a Team game we can't blame any one player.Yes there were many things which doesn't goes by our side which can be neglected by the team which cost us T20 World Cup.But hope next time Indian team will comeback strongly.