My reflection in the mirror looks unfamiliar, so I'm looking for skincare tips.

Lately, I feel upset because when I look in the mirror, my complexion looks unusually dull and my makeup doesn't seem to apply well. A while ago, I went to a department store and was so shocked by my reflection under the bright lights that I stared at it for quite a while. In the past, I was fine even if I just applied basic skincare products haphazardly, but it seems the time has come to start paying systematic attention to my skin. That made me want to learn at least one proper skincare tip of my own and put it into practice. Perhaps because it is the change of seasons, I can feel my skin texture becoming rougher and my internal dryness getting worse, so I am extremely worried. Do you happen to have any skincare tips you use to soothe your skin and replenish moisture during the changing seasons? I would really love to know how to use face masks effectively or if you have any specific products you would recommend. Even if it is just a small habit, I would be grateful if you could quietly share any personal skincare tips you have for maintaining clear skin. I look forward to your thoughtful replies!