How can I bulk up and increase my muscle mass?

Im a teen whose been lifting for 2-3 years. Doctors tell me that weight lifting doesn’t stunt growth (i’m only like 5’6), even when doing more weight and less reps for bulking up. I want to bulk up fast and increase my muscle mass. I’ve been researching on the internet but I need more answers.
my parents won’t let me use supplements or creatine.

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