Installing APKs of unknown sources can be a convenient way to use apps which are unavailable on the Google Play Store, but it also poses some security risks. Before proceeding, make sure that you only download APKs from reputable sources, and with caution be cautious when installing apps from unknown sources.
To install APKs of unknown sources on Android, follow these steps:
Go to your phone's Settings app. You can usually find this app on one of your home screens or in a folder of the similar name. Alternatively, swipe down from the top of the screen with two fingers and click on the settings icon.
Scroll down to the Security section and click on it. Depending on your phone model and Android version, the location of the Security section may vary. On older Android models, mega888 you might need to go to the Program Manager or Software section.