What kind of care should I get for sensitive skin?

hello~

I didn't originally have sensitive skin.

I've been feeling like my skin is becoming more sensitive since last year.

I also developed a lot of redness and couldn't apply any cosmetics.

What kind of care should I receive for sensitive skin to minimize sensitivity?

Is it possible to get it with laser treatment or through skin care?

I wonder if it can be solved~ What could be the cause of my suddenly sensitive skin? ㅠㅠ

I think we need to address this from the root so it doesn't become a long-term war... I'm so worried.