Question regarding myfitnesspal

1. Does the predicted 5 week goal actually work?
2. Should the "net" be negative..its currently 691 is that bad
3. Im currently 6'1 and 210 pounds...what should be my goal? (Im 16 years old)

Im from pakistan and what my parents make is usually very unhealthy since its basically drenched in oil ...any tips for controlling what you eat when you have no control over whats made?