Open your Android project in Android Studio
Create or prepare the icon image files in the required sizes
Right-click the res folder
Select New
Select Image Asset
Choose Launcher Icons as the icon type
Select the image source
Adjust the foreground and background settings if needed
Preview the icon
Click Next
Click Finish
Open AndroidManifest.xml
Find the application tag
Set the android:icon attribute to the new launcher icon resource
Set the android:roundIcon attribute if needed
Rebuild the app
Uninstall the old app from the device if the icon does not update
Install the app again
Verify the new icon appears on the home screen and app drawer