im gonna post this on this forum since the other one is inactive

Hi I'm 17 y/o guy. I didn't have too much acne before but I did have some acne 1-2 years ago when I started puberty. Now it's cleared but I'm just left with these spots ,not sure what they are exactly. They're not that bad but I would like them to be cleared up and my skin be even/smooth. Can anyone help? What should I do?