How should I manage acne red marks?!

Hello, every time I look in the mirror, I have more and more worries about my face ㅠㅠㅠsob sob It seems like skin care is the hardest part ㅠㅠ The concern I want to ask about this time is acne red marks!!! Sometimes acne red marks remain in the place where acne or skin troubles have healed, and sometimes they are dark colored. Is it possible to treat these together with one laser? I really want to get rid of the acne red marks this time ㅠㅠ