Perhaps your method of dumping the water works fine for you, but it is a very inconsistent method. There's a video on Youtube[1] of a "coffee brewing champion" who uses this method sometimes, and admits you are essentially playing roulette with your brew. But it can lead to more varied flavor profile from cup to cup.
You may be better off grinding coarser, and not skipping the initial "bloom" phase. When not simply dumping water into the brewer, there are of course many other variables to tweak to try and achieve a tasty cup.