Talk to Dermatologist on Acne, Acne Scars, Pigmentation

I have acne and acne scars since past few years. I used medications like tablets, lotions and creams. but now I m married so I can't be on medications. so kindly suggest best affordable sunscreen, and anything for acne and scars. I have dark circles as well. I use salicylic acid cleanser, serum, and niacinamide serum for 2 months but no results. kindly suggest me something for my skin. I have combination skin. thanks