Is there a cost-effective treatment to manage red acne marks?

I am someone who has been troubled by the red marks left behind where acne used to pop up and then subsided.

Since the acne marks are still there, my skin doesn't feel clean overall.

I have red marks here and there, especially on my cheeks, so they stand out even more when I don't wear makeup.

I have been trying soothing products and cosmetics at home that are supposed to be good for acne marks, but I don't see much change, so I am looking into dermatological procedures. However, treatments that require multiple sessions are expensive, so I am looking for a procedure that is effective in a single session and relatively cost-effective. I would appreciate recommendations for any treatments that can improve red acne marks and help even out my skin tone.

If I have to undergo the procedure multiple times, I am also curious how many sessions are usually required to see noticeable changes.

Please let me know if there are any treatments that offer good value for money or are easy to try without feeling too much pressure!