There is black spots and scars present on my legs because of insect bites; what should I do? (Photos)

Respected doctor I have dark spots. And scar on my legs due to insectbite during my childhood. I cant wear shorts because of these scars and spots i tried hiruscar cream but it didn't work on my skin am very worried about my skin my all friends tease me because i always wear long pants and t-shirts. Even in summer season so please help me i dont have enough money to do surgery am dependent citizen so please could you say what's easiest and cheap method to remove scars and black spots on my leg

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