See Every so often, the volume on my Samsung Galaxy Note 5 will oscillate wildly. How do I make that stop? - I can't make it myself, sadly, so I must ask you.

Like the title implies, I want to delete free apps from my Play Store library. I don't want to remove paid apps because I obviously paid for them so that means that they are useful to me in some way or another. But I have accumulated a list of around 500 apps, of which 90% aren't used anymore. Bu...