Is earning profit from YouTube through advertisements, by authorizing YouTube to place an advertisement that varies according to the viewer's interests, permissible or forbidden, knowing that the uploaded video is free of prohibited content and is a personal production?

It is not permissible to earn or work on a website that displays haram (unlawful) advertisements, for Allah Almighty says: "And do not cooperate in sin and aggression." And whoever calls to misguidance will bear the sins of those who follow him, as stated in the Hadith of Abu Hurairah.