What would be good to use while checking my skin condition these days?

I've been checking my skin condition lately, and I've noticed that it's very dry, and my freckles are becoming more noticeable, perhaps because it's winter. I've been using only basic skincare, but my skin tone has become dull and makeup doesn't adhere well, so I'm thinking about buying some new home care products. I'm particularly curious about ingredients or products that help moisturize while also reducing freckles. I also thought UV rays would be weaker in winter, so I'd like to know if I should definitely use sunscreen. My skin is sensitive, so I prefer products that are gentle on the skin. Based on your recent skin checks, could you please advise me on what routine or products would be best for me?