Is one cleansing foam enough?

I used to prefer using only one cleansing foam when washing my face.
Recently, I have heard a lot of talk about the need for double cleansing.
There were also opinions that one should use cleansing oil even if they only apply sunscreen.
So I was worried that the current method might be insufficient.
Conversely, I also heard that washing your face too much can dry out your skin.
It was difficult to judge which method was more correct.
I was also curious if the cleansing method varies depending on skin type.
Since I perform this maintenance every day, I wanted to know the exact standards.
I was worried that I might be needlessly continuing a bad habit.