Your knees aren't suppose to go past your toes and stick your ass out and lock your upper back and your shit won't round.
Guess what squats help, stop being a bitch.
You're not a fucking hard gainer you don't eat any fucking food. And, no deadlifts aren't as good as strength/mass builder as the squat.
Yeah, really who would have thought putting more weight on a fucking bar would affect the difficulty and bar speed. Now, eat some more fucking food and squat and before too long you'll think that weight is no longer difficult and it is no longer affecting bar speed.
Squats and Milk bitch, learn it.