Is there any way to care for sensitive skin, which is a growing concern these days?

In the past, my face didn't feel tight even after washing it, but these days, even after just washing, my face gets red and feels itchy. When I look in the mirror, my skin texture is different and dull, which is frustrating. Especially during the seasonal change, I panic because even my usual cosmetics suddenly don't seem to work for me. Every time this happens, I find myself sitting in front of my vanity for a while, wondering if I really have sensitive skin. Even a little bit of sleep deprivation shows through, and my skin gets irritated, so I have to cover it up when I go out. I used to recover quickly from even a slight condition, but now it seems to be slowing down, making skincare a must. I'm looking for products that are less irritating, but it's hard to know which ingredients are right for me. Are there any gentle products specifically designed for sensitive skin that I can use consistently? Everyone around me seems to have great skin, but I feel like I'm lagging behind, and it makes me feel depressed. I'm curious if anyone else is struggling with sudden changes like I was. How do you soothe and manage your sensitive skin? If you have any good tips or recommended routines, please share them with us.