Do players roll their own dice?

D&DBeyond: Advantage and Disadvantage

Sometimes a special ability or spell tells you that you have advantage or disadvantage on an ability check, a saving throw, or an attack roll. When that happens, you roll a second d20 when you make the roll.

  1. If a player is to ‘make a roll’ does that mean they physically roll the die themselves and observe the result?
  2. Does this apply to all rolls that a player is to make, or only the listed ability check, saving throw, and attack roll?
  3. Do players know the result of the roll?

I am asking only about RAW/RAI. I include this statement because when researching this question I came across countless threads without any kind of official sourcing claiming that players do not always roll their own die.