This post makes no sense. Saying 'Criminals' become better criminals in prison is oppressive and discriminatory and how on earth it is related to this issue at all I do not know.
Perhaps, or they just don't do it again. Not all people in jail go back. Generalising things like you have here is not helping anyones understanding on the issue
No, I wasn't especially precise but it's reasonable to assume that I'm rational enough to understand that not everybody that's released from jail re-offends, but it's fairly common: 60% for the US and 50% for the UK. [1] Likewise, sometimes governments fix their own wagon when they get caught doing some shady shit; often they don't.