I've seen people saying that a fast or slow metabolism really doesnt exist. But now I'm wondering.. I've been trying to cut since march so for 9 weeks now. I've only lost 3kg. Which seems kinda slow to me also because most of it probably was just water.I am 26 years old, 190cm tall and went from 93 to 90kg by eating 2050 calories every single day (I eat the same stuff everyday), running a 5K three times per week and on the days I'm not running I do 10K steps.

Shouldn't I be losing weight much faster at my weight with those calories? Or is this kind of weight loss to be expected and I just need to lower my calories (to 1800) or do more cardio?