Coffee is so difficult to nail consistently, which is down to the number of variables. It starts off with the type of bean; which country did it come from? How was it roasted; dark or light? How did you grind it; what setting and was it a burr grinder? What kind of water did you use; soft or hard? What temperature was the water exactly when you prepared it? What extraction method did you use; pour over, Aeropress, moka pot, other? What method did you use? How many grams did you use? Stacked and in concert it totally changes the outcome.