I battled a lot with pimples during my teenage years and early 20's. I think its a bit hereditary and common among Africans. But eventually, it cleared as I advanced 25 and down. Older members of the family said it usually happens that way and it did.
Fruits that contain nutrients that nourishes the skin are essential for pimples as pointed out above
Yea at times pimples can be linked to gene also but can also be caused due to food been consumed