With a simple interface and just as you would like in such an application, LockX: Lockdown Lite (Small, fast & secure) is very easy to set up.
In a first step you will need to select the type of “lock” you want from numeric PIN or swipe pattern. The application then scans the device and identifies the installed applications.
From the list of applications, it will only be necessary to click on those to which it is difficult to access, either for protection against third parties or against ourselves, preventing, for example, an unwanted uninstallation.
LockX: Lockdown Lite is free, containing ads. It is available for Android devices from the Play Store.