Proper way to debug through installed android app on Device - android

I am new to app development, currently i am developing apps in Ionic/Cordova/react-native frameworks, in all these i have pretty much easy browser based debugging options. but when it come to installed apps, i have not found any proper documentation.
so can you please guide me to find the proper way to debug and check installed app on devices, currently not found any relevant information .
Thanks,
Sopo

If you are using google chrome ,connect your device to your computer via usb and navigate to this url chrome://inspect/#devices from here you will be able to debug the installed app.

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