My skin looks so dull these days, so I'm curious about some skin care tips.

Yesterday, on my way home from work, I was startled by my reflection in the subway window. Maybe it was because the lighting was unusually bright, but my skin was more uneven than usual, and my dark circles were more pronounced. I'm starting to feel a bit overwhelmed, wondering if I've reached a point where simply getting enough sleep isn't enough to fix my skin. Even if I change my basic skincare routine, it feels superficial, and my makeup keeps coming off, which is stressful. Do you have any skincare tips that only you know? I've tried using face masks and other methods, but I haven't seen any noticeable changes, which is frustrating. I even searched YouTube, but there are so many ads that it's hard to find real skincare tips. My skin is sensitive, so I desperately need gentle skincare methods rather than overly irritating products. Even small daily habits are helpful, so please share any skincare tips! How do you all maintain your skin during the seasonal transition?