I'm really worried about my skin condition these days. Do you have any tips for managing it?

Hello! Yesterday, on my way home from work, I ran into a college friend I hadn't seen in ages, and she was amazed at how clear and radiant her skin was. Lately, I've been a bit sleep-deprived and stressed out from work, but my complexion has been looking dull, and I feel irritated every time I look in the mirror. I've tried using face masks and slathering on a ton of supposedly good essences, but my inner dryness just doesn't seem to be going away. I'm curious how you all cope with this. Do you have any special skincare tips of your own? I'm just starting to get into home care, and I want to rebuild my skin from the ground up. If you know any skincare tips that quickly restore skin condition, please share them. With the changing seasons, my oil-moisture balance seems to be off, and my makeup keeps flaking off, which makes me feel less confident whenever I go out. Even small habits are great, so if you have any skincare tips that have proven effective, please share them with me. How do you all take care of your skin health in this weather?