Pimples leaving scar even when not popped

Even if I don’t pop a pimple, I can still see what looks like a scar from it for several months (more than three). That just doesn’t seem normal to me, does it to you? How can I change that?

My skincare routine is cleanse one a day, use a toner, then moisturize. I exfoliate whenever needed. I use miscellaneous cleansing water at night followed by adapalene gel (used to be prescription but now you can buy OTC) for acne. I only moisturize using non comedogenic products, same with any concealer I may need to use for the pimples.