I have no idea what the Death Save Graphic is trying to tell me personally

Dying character rolls a d20 every time it's their turn. If 10 or below, they fail, if 11 or above, they succeed. 3 fails mean you die, and in DnD 3 successes mean you're stabilized and won't die, but not sure if that the case in this game, or if your character gets back up with 1 HP because I never got to that point. A character getting hit when they're dying also adds to the fail counter. You're also supposed to get +2 fails if you get crit, but I'm confident this is
not the case in the game because I'm
fairly sure one of my characters got crit while dying and only got one added. Not sure if bug or feature.
The little graphic has 3 segments on each side, with the light side being successful rolls, and the dark side being failed rolls.