So lets consider some real example for better understanding: there is a communicator app called Line available at Google Play. If I check all required permissions of Line there, it shows over 60 detailed described permissions +3 trackers, so it looks like it would be designed to overtake my Pixel, rather than just providing communication services. But - as I understand - after installation on device and granting no permissions in app settings (which only 11 permissions settings are visible and allowed to be toggled) to it, it will be harmless towards the data on my phone anyway, since no any of mentioned above over 60 required permissions will be given to the app. Do I understand correctly?
And how about the trackers? How GOS handle them? Or external app is necessary to manage trackers traffic?
To understanding this, would help me to decide where should I install this app on my phone. If it would appear to be safe for my data, after all permission denying, then I would install it at my User account where most of my trusted apps are located and I store sensitive data. However, if despite of giving no permissions this app will still try to harvest my data somehow, then I would prefer to install it in another User profile, where I keep only untrusted/privacy invading apps.
Thanks in advance for reply.