Squatting with dumbells makes you look like you're taking a crap with your pants on. Do it with a barbell and be a man.

Your diet up there, frankly, is bad. Coming from me is a bit hypocritical, cos I just ate 10 biscuits. BUT, I'm your height and a good 30 kgs heavier than you. Why? Because I ate, ate and ate. I try to at least eat "clean"; no fast food, no oily food etc etc bla bla 5 times a day. Chicken breasts are supposed to be your friends. Drop them drumsticks.

Have you tried squatting with the bar only? Do that first, then, once you're comfortable and able to knock 10 reps with GOOD FORM then slowly add weight. Form over weight is paramount. Don't give a crap about others when you're squatting with 5kgs plates on each side. Safety first. Work your way up, never let ego dictate the number.

Also, a squat is exactly what it is, a squat. Don't do half-assed reps. I've seen skinny buggers load the bar with weight twice their own bodyweight yet they squat 3 inches. And they wonder why their legs aren't growing. Sheesh.

Happy squatting, mate.