What can i do to get rid of my scars?

i have this big old scars on my legs, i have that for like 18 years now, pls i cant even show my legs cos am embarrass, in summertime i have to wear jeans and pants only since i have ugly legs, so someone tell me what i can u. i heard of Mederma is it really good for such big scars, i cant afford to go to the dermatologist cos i dont have insurance, someone pls help me.|||Get some tatoos.|||if you put a thick layer of upf+ 50 sunscreen on it and then cover it with duct tape for about a week it helps fix them the scars will still be there but they will be skin colored and less noticeable