How to force app to start at system inicialization?

I need my app running after the system is started.

How could I do this? Is there a plugin for this?

I need to receive notifications every time, even background notifications. Without necessity of the user interact mannually with the app. And this behavior is not happening today. When I turn on my cellphone the app is not working immediately. I need to open it and it’s not acceptable.

I don’t need to do this way, if someone give me a better option. But I’m considerating all possibilities to understand way it don’t works the way I need.

Did u try to use a background service?

You can see my code here:

There’s no way to do this. If the app is not running or in the background, it cannot be started when OS starts.