Itchy skin, how can I overcome this?

I'm a complete amateur who's just starting to get into skin care. Lately, itchiness has been making my daily life difficult, so I'm posting this to ask for advice.
Especially after the cold wind starts to blow, my back gets itchy frequently, and it often gets worse when I go to bed, preventing me from getting a good night's sleep.
I'm worried that my skin will become red and bruised if I keep scratching it.
Although many people suffer from itching, they are at a loss as they have no idea how to manage it.
I have body lotion, but it doesn't seem to be enough. If you have any recommendations for moisturizers or cleansers with specific ingredients that help relieve itching, I'd appreciate it.
I would appreciate some wise advice.

thank you!