So something you should look at is the onbeforeinstallprompt event. It lets you capture the 'popup' and display it again somewhere in your UI. Controlling this display is a better experience, because you can show it only to your engaged users, in a part of the UI that they'll expect.
Trusted Web Activities are also a way, on Android, to get your PWAs on the Play Store.
TIL! Ill take a proper look at all this.
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