I don't think there are many women (outside porn and erotica) who can easily cum just from vaginal penetration. You usually need something extra. Some women may be lucky enough to get there this way but most I have been with and talked to say they need both clitoral and vaginal stimulation and usually a lot of both. Hence the need for patience.
Also, something which many hetero women are not aware of (from what I have found) is that all women are different in the same way that all men are different (and many hetero men are not aware of this but women are) in terms of what turns them on. This means that sometimes something which worked on an ex may not work on someone else and, in some cases, may even have the opposite effect. To give an extreme example, some women get turned on when you pinch or bite their nipples hard during sex while others scream and punch you in the face
Yes, both the above have happened to me...![]()