Hello, you are in adolescence now. It is normal to have acne. It is best not to squeeze to prevent inflammation and infection. The white material is a fat plug.

Guiding opinions:

Skin should be clean. Most skin with acne is oily. Wash your face often with warm water to keep your pores open. Also, your face must be washed once in the morning and once in the evening. You can't ignore washing your face in the morning, and then apply toner after washing your face, because your skin should be oily. At the same time, exercise more, sweat on your face is better, and detoxify your skin from the inside out.