The donut is your day's calories, and the wedges are each macro's SHARE OF ENERGY, not its grams. Protein and carbs count 4 calories per gram, fat 9, so a small number of fat grams takes a large wedge.
The macro you chose in Settings wears the accent color. The other two go quiet. That's a lens, not a goal.
Water is a counter with no target. Tap the total to undo your last pour.
There is no goal ring, no calories remaining, and no streak. That is a decision, not a missing feature.