How do I lose weight naturally and permanently in 6 months?

I’m 15, 5'5 and 140 lbs. How do I lose weight? I walk a lot.

How much weight can you lose in 5 months when you’re 185 lbs?

What is a suggested diet menu to lose 7 kg in a month?

Can I eat junk food once a week during my weight-loss journey?

Why am I losing weight but not seeing any real fat loss?

Is cardio more healthy than weights?