Everytime i Squat, my upperbody bends over to much when i go deep, the result of that is huuuge pump in my lower back wich results in that i cant do any more squatting,
So everytime i squat i have to put some weights under my heels, that helps me keep my back kinda straight while squatting,
So my question is, can i do anything to fix the form so i can do proper squats?
Or doesnt it matter at all and i should keep on going doing squats with heels a bit higher?
(Sorry for the bad english but im not an american haha

, (Swede) Hope you understood what i meant anyway,