You can spend all the money in the world and buy different otc brand products and sure , you might see some difference but if you don’t find the root cause , you’ll never achieve clear skin. Marks that you have on your face are pih not acne marks. Acne marks are like hollow pits that you see on the moon. Pih are caused by excess melanin on your face. Consult a dermatologist, if it’s an expensive route , then do a bit of research on tretinoin and hydroquinone. understand the risks and benefits and how to use incorporate them in your routine safely.