Does the foreskin have to be cut?

There is no need to remove the glans penis without affecting sexual life. Cutting it off will affect your sensitivity.

Let women relax and men do foreplay. Then the woman goes up to find the man, and the woman only needs to put her penis in her body and slowly develop it.

When you are completely soaked, enter slowly and keep your legs as apart as possible. If it's really big, you can only go in slowly, stand still for a while, and then you'll be fine if your tightness is not so strong. Women's vaginas are elastic, so children can come out at that age without worrying too much.