How to assign a private transform of my player in script?

I have a variable called “Player” and it is of type Transform. I am trying to figure out how to assign it. As seen in the picture below, I can easily assign it by just making it public and dragging the object into the public variable slot in the inspector. 119430-capture.png But I want to assign the variable using the script it is in and make it private. How do I do that?

You may use a tag along with GameObject.FindWithTag(string) to locate the object and get its transform property.

if (GameObject.FindWithTag("Player"))
    player = GameObject.FindWithTag("Player").transform;