Has anyone solved their acne pigmentation problem?

These days, every morning after washing my face and looking in the mirror, I sigh. Before, even when I got breakouts, they would quickly subside and leave no trace, but now, once they appear, they just don't go away. Especially the acne pigmentation around my cheeks. I can't even count how many times I reapply concealer every time I put on makeup because of these marks. I've been consistently using vitamin ampoules and trying various whitening products to achieve clear, clear skin, but I'm frustrated because I haven't seen much of an effect. Under the light, the acne pigmentation is especially noticeable! Every time it's visible, my self-esteem drops a little. I diligently apply sunscreen every time I go out, but managing the acne pigmentation that's already there is a real challenge. Do you have any home remedies to erase these marks? If you have any effective masks or routines that don't require dermatological procedures, please share them.