I'm worried about my skin becoming dull. Could you recommend some skin care products?

Yesterday, I met up with some old college friends I haven't seen in ages. Everyone was probably busy with their social lives, but one friend's skin was particularly radiant and vibrant. Looking in the mirror under the cafe lights, I felt a pang of frustration at how dull and tired my face looked. I've been practicing my own home care routine, but seeing my friend's radiant skin made me realize I need to get some serious skincare recommendations and try them out. In the past, I felt like anything I put on would quickly heal my skin, but lately, I've been noticing dryness in the morning that lingers into the afternoon, and that's concerning. So, I've been asking around and searching, but I think the most trustworthy recommendations come from members of this site. I'm focusing on highly nutritious ampoules and functional creams, but do you have any recommendations for hidden skincare products that only you know about? I'm curious about how you all improve your skin condition.