如何使用UILongPressGestureRecognizer在用户位置添加引脚？

I am making an app that adds a pin on the map , and so far it has been adding the pin where the user does the long press, but I would like it to change and add it on the user location instead, however, I don't know what to change to make it happen, could you please correct my code to make it work? thank you , I added my code below:I am making an app that adds a pin on the map ,