Where does desire come from?

Desire is simple, and it comes from wanting or not wanting. Of course, a desire sometimes needs the help of other "things". There will be a lot of desire when using it. For example, if you want to get a woman, it is not enough to be sincere! At this time, you will think of borrowing other "things" to achieve your goal. Or money. Or power. Or boxing. Or talent and so on. ...