Insecure about legs😭 ( sorry for my english )

Hana

Hey guys 👋🏻 so im 14 years old and i have hyperpigmentation, ive got dark spots on my legs and arms and my knees and elbows are very dark and im very insecure about and they don’t go away,i have used hydroquionon ( the spelling is wrong sorry ) and lemon and stuff but nothing has worked, i use foundation to hide it but it looks kinda ashy, so is there anything you guys have tried and worked? some tips ?