I'm worried about acne and pigmentation ㅠㅠ

Every morning after washing my face and looking in the mirror, I sigh at how my skin is no longer what it used to be. Where my breakouts had previously subsided, red, dark spots remain, leaving me with acne-like pigmentation. I don't know how to manage this, so I spend hours in front of my vanity table every morning. I try to cover it up with makeup, but it doesn't completely hide it, and it just makes my skin look even more dull, which is frustrating. I used to think I could just leave it alone, but now, these acne pigmentation marks have been around for quite some time, and I'm constantly concerned about them every time I look in the mirror. I'm trying to start a home care routine, so I'm looking into vitamin products and whitening creams, but there are so many to choose from, it's hard to choose. My skin is sensitive, so I'm wondering if there's a way to address this concern without irritation, but with acne pigmentation. Do you have any effective treatments or product recommendations? Please let me know. How do you usually manage this?