Lets list some points if we don't have a government :
I can tax others who i am powerful than / can take properties
Free speech
Can punish and prison people
Can harm others
As an individual we may not complain about this until everybody can have the same rights to do all of these to you too. For example, I like to organize movements whereas another person does not like to do that. He can prison me and much more complicated things can happen without a government. In this case ( Thomas Habbes - a great politician ) had to say something on it : “As long as men live without a common power to give them respect , it would be a war for man against a man , a war which requires ( force - where people can forcefully make people do things ) and ( fraud - where people can cheat another people ) there won't remain mine or yours. In such a condition a man will have the right to do anything with another's body , our world cannot survive “ this was written in 1651 by Thomas hobbes , he wrote this in the end of the english civil war. That is the reason we need a government because they have more power than us , the group of people who could manage all of these but in a right way