Runescape 500k an hour members?

hey i am a member and my only good skills atm is 57 mining and 55 smithing and like 50 crafting. I want to make 500k an hour but idk what to do, everything seems slow. plz i need ideas, for example the granite trick. "u buy granite 5kg and chip it all down and make 1.5k profit but it never sells, i need ideas like that. Ty for your time and my user name on rs is "i-iz-juicy" lol plz add me if ya want.