Hello I Am 25yrs Old Female Form Nepal. My Height

hello I am 25yrs old female form nepal. my height is 5'4" and weigh 50kg. I have got a lot of pimples on my lower cheek and on my neck... few on my tample areas... they come on go leaving dark scars all over.. I use rayshield and dermamoist.. what would be the solution my my pimples and scars???