New to skincare

Hi I recently started skincare products and almost in my 40s. After my fourth child was born my complexion started getting darker so I started searching for skincare products to use. It has been so overwhelming for me because I don’t know which product is good for my skin. My PM routine:For cleanser I have been using Nature Republics snail cleanser. After that I applied Corsx aha/bha clarifying treatment toner which has glycolic acid. After that I sometimes use Beauty of Joseon ginseng essence water . Then I use beauty of joseon glow deep serum. Then I use milky dress eye whitening cream and in the end I apply beauty of joseon dynasty cream . Once a week I use Missha time revolution night repair set with ampoule and cream . Morning routine I use cleanser and then skin lab vitamin c brightening serum and dynasty cream along with sunscreen. Sometimes use beauty of joseon glow serum at night . It’s been three weeks and haven’t really seen any change in my skin but noticed I have more open pores on my cheeks and a little bit of redness . Am I overdoing my skincare products? Have stopped using toner and essence because I think my skin reacted to that . Hope someone can help me . Thank you !