Question 6th round cleansing

There are so many different cleansing products available that it seems difficult to choose, and I'm not sure which one suits my skin. I have both dry and combination skin.

In particular, I am curious about the difference between cleansing oil and foam cleanser. Also, I would like to know if there are any important points or precautions to keep in mind when cleansing. Finally, please recommend any cleansing products suitable for different skin types.