When an Android device starts exhibiting issues like frequent crashes and rapid battery drain after downloading an application, the first step should be to address the immediate cause: * Uninstall the game application:Since the issues started after the game application was installed, removing it is a logical first step. Unwanted or malicious applications can cause such symptoms by running harmful processes in the background or exploiting system resources. * Install the latest security patches:Keeping the device updated with the latest security patches is crucial * for protecting against vulnerabilities that could be exploited by malicious software. Updating can resolve existing security flaws and improve device stability.