Cracked applications are modified versions of the original application. Since they are edited and certain payment gateways are bypassed, those become illegal apps. Therefore obviously you won't find cracked apps in Playstore. But there are certain third-party app markets such as ACMarket that allow you to get all those cracked and modified applications. Those all are edited and added into the ACMarket like applications with high security. So no need to be afraid. Be one of those millions of ACMarket apk users and experience any cracked app you like.