Im 17 and realy want to get a hair transplant to restore hairline and thickencrown. mydad and uncle are bald but have hair on the sides (donor sites) ?

You want that?: At or shortly after age 17, ALL normally-masculinized men lose the hair on their temples. This is supposed to happen. Your likelihood of progressing to male pattern baldness is genetic but not predictable from your family; it correlates pretty well with how much chest hair you're naturally blessed with. Managing it can wait. Get super-fit and it won't matter where you have / don't have hair.