Sharing 'daily cleansing amount, time, frequency, intensity, and proper usage + where to buy samples'!

I only use cleansing products in the evening or after applying makeup, and especially on mornings when I don't wear makeup, I sometimes just wash my face with water.

I feel like using it too often actually irritates the skin and isn't good, so I try not to increase the frequency of use as much as possible, but cleansing properly is important too, isn't it?

Q.1 Please provide guidance on daily cleansing usage, duration, frequency, intensity, and proper application methods, as well as recommendations for products suitable for dry skin.

Q2. Also, I would like to test if a sample or a small size of the product suits my skin. Where can I purchase it? Please share the information.