Why were the Russian people unhappy with their country's involvement in world war l?

High levels of death and a devastating economy.

Russia was sending millions of untrained soldiers to the war with not enough supplies which led to a very high death count in Russia. Nicholas II spent much of Russia's money on the war leaving the rest of the country in poverty. People were starving to death and struggling to survive as food supplies were limited with men off at war instead of producing food. Strikes began in the cities in protest of the conditions and the war.

Russians were generally unhappy with their government. The poor perfomance of the Russian army in the war catalysed this bitter feeling.

In addition, the Soviet economy was also doing poorly.