The nightly news/MSM/sock puppets do not like to talk about them, but many many people have had very bad reactions to the vaccine.

I was shocked last week when Eric Clapton went public about his bad reaction and felt he had been lied to and no one was accountable and it turned him off of the untested vaccines.... and the internet ate him alive as if he had done something wrong admitting his bad reaction. It was very scary to see the mob mentality of people who attacked everything about him.

TL/DR

why you should not take vaccine provided by the government?

many many people have had very bad reactions to the vaccine and if you take the shot, as it is today, you could have a bad reaction too.