I 13 years old, a girl, what should I do if I always think about evil things?

Isn't that normal? Masturbation is a beautiful thing, don't think it is evil. Now 90% of girls masturbate during adolescence. You are after 00.

Why is this idea so old-fashioned As long as you masturbate normally.

Just don't mess around with practical actions. Sister, it's okay. Think too much. And your frequency is not high.

Only three times a month.