Why did the kerenski government become unpopular in Russia
Answers
First of all there were objective reasons like shortage of food, ruined economics and others. But these reasons were not the fault of Provisional Government.
The second was the activity of bolsheviks party.
The bolsheviks did their best to destabilize situation in the country. Everywhere. They appealed the soldiers to stop fighting and leave army. It was during war! They appealed the workers not to work and start striking at any reason. They intentionally tried to create chaos in the country to blame in it the Provisional Government. The Provisional Government had a goal. They appointed the All Russian Congress for the beginning of 1918 where the people should have selected a new power. And they saw their mission was to open that Congress and pass the power. This is why bolsheviks were in a hurry to make a coup before that Congress.
The bolsheviks used the tools that worked very well in Russia: lie and terror. They easily promised everything what people wanted to hear. They promised to give the land to peasants. They promised to give the factories to workers. There were a lot of silly people who believed to that promises, who wanted to get everything at once without doing anything. Today we call it populism.
When bolsheviks took the power they began to kill those who remebered their promises.