Question) What products are suitable for dark skin?

I haven't known how to take good care of my skin for a long time, and I generally don't look after it. As a result, it is directly exposed to UV rays, so my skin tone is naturally dark.

However, I would have understood if my skin had just become darker, but gradually, secondary hyperpigmentation occurred, pores enlarged, and corn spots and black spots began to appear, so my skin started to undergo changes.

So, if it is okay to start now, if there are any good products that can help improve this kind of skin, such as basic skincare products or sunscreens, etc.

I'm hoping that if I apply even a little bit consistently starting now, I might be able to somewhat prevent future skin issues. Please recommend some good products. I look forward to your advice.

My skin tone is oily.