Single tap Lock Screen without Admin permission and Remapped Google assistant button as a flash for your convenience.
Advantages
1. Quick, Immediate and Convenient.
2. App Icon matches the default android icons on homescreen.
3. You can use Google Assistant button as a Flashlight toggle.
4. Pure Stock Android Experience.
Note
To use Google Assisstant button as a Flashlight toggle.
Go to Phone's Settings > System > Gestures > Google Assistant Button > Turn it OFF.
Permission
This App uses the Accessibility permission which is required for the app in order to lock the screen from the app, which is main and only functionality of the app.