I'm wondering how to start my basic skincare routine for the changing seasons.

I'm wondering how to start my basic skincare routine for the changing seasons.
I am wondering which product should come first, a moisturizing ampoule or a moisturizing cream.
I've heard that if you don't do proper basic skincare during the change of seasons, your skin can easily become dry. Is that actually true?
I would also like to know if there is a simple basic skincare routine for the changing seasons.
I am wondering if it is okay to use the entire product at once.
I'm also wondering if I need to do this consistently every day, or if I can adjust it depending on my skin condition.
I'm worried about whether it's okay to start based solely on recommendations from others.
I am also curious about the best order to apply basic skincare products to stabilize the skin during the change of seasons.
Is there anything special I should pay attention to if I want to see results quickly?
Ultimately, I want to find the right basic skincare routine for the changing seasons to maintain moist and healthy skin.