I desperately need skin care know-how ㅜ

Yesterday, I had a great time meeting up with some old college friends I hadn't seen in a long time. We ate delicious food, went to a nice cafe, and finally, we went in to take a trendy four-panel photoshoot. But when I looked at my face in the brightly lit photo, I could tell right away that it looked much duller than usual and my makeup was all over the place. I hadn't noticed it when I looked in the mirror alone, but seeing photos taken by others or in brightly lit rooms really made me realize the need for skincare. My friends all looked smooth and radiant, but mine had enlarged pores and rough skin, which was frustrating. I've been just routinely taking care of my skin at home, but I think I need to develop a more systematic skincare routine. Seeing my condition suddenly drop like this has me wondering if it's simply lack of sleep or if my recent cleansing product isn't working for me. I was wondering what your skincare routine is when your skin suddenly becomes flaky. Do you have any favorite facial masks or any tips for changing your basic routine? Yesterday, I had a great time meeting up with some old college friends I hadn't seen in a long time. I ate some delicious food, went to a pretty cafe, and finally went in to take a trendy four-panel photoshoot. But when I looked at my face in the brightly lit photo, I immediately noticed how dull it looked and how much makeup I'd worn down. I hadn't noticed it when I looked in the mirror alone, but seeing photos taken by others or in brightly lit rooms really made me realize the need for skincare. My friends all looked smooth and radiant, but mine had enlarged pores and rough skin, which was frustrating. I've been just routinely taking care of my skin at home, but I think I need to develop a more systematic skincare routine. Seeing my condition suddenly worsen, I'm starting to wonder if it's simply lack of sleep or if my recent cleansing product isn't working for me. I'm curious what you guys do when your skin suddenly becomes flaky. Do you have a favorite mask or any tips for changing your basic routine? Sharing your experiences would be incredibly helpful.