Does teaching young men how to deal with girls and gain female friends through a YouTube channel count as a sin?

Teaching how to establish relationships between the sexes is considered a reprehensible and forbidden act. It is not permissible for a man to take a strange woman as a mistress, as this was a practice of the people of Jahiliyyah (pre-Islamic ignorance) and Islam forbade it, for Allah the Almighty says: ﴿محصنين غير مسافحين ولا متخذي أخدان﴾ [Al-Ma'idah:5] (marrying them and not committing illegal sexual intercourse, nor taking them as girlfriends). Engaging in such teaching is a form of cooperation in sin and aggression, and he who guides to evil is like its perpetrator. The obligation is to repent to Allah and either close this channel or direct it towards spreading good and virtue, striving to remove videos that contain religious violations.