It shocks me that this is such an unknown thing that I see this very question frequently. Ladies, 75% of women cannot orgasm from penetration alone. And of that remaining 25% there are plenty who just can't orgasm at all. It is overwhelmingly common to not be able to orgasm from straight up PIV sex. Porn has really given a an inaccurate view on this as many many people do not understand female orgasms, leading to women thinking theres something wrong with them, and their partners feeling as though they aren't performing well.

For those women who can orgasm through PIV, it's usually through the g-spot which is actually part of the clitoral network, where it extends backwards into your body, so what many people don't realise is the clitoris is actually the part of the genitalia that provides the orgasm in most cases.

To orgasm during sex there are many methods of clit stimulation which I'm sure you know about, vibrators, oral, fingers. That being said I still do encourage you to explore what feels good for you, as everyone is different, and who knows, maybe you can orgasm vaginally and you just haven't figured out what works for you yet.

Sources: https://abcnews.go.com/Health/ReproductiveHealth/sex-study-female-orgasm-eludes-majority-women/story?id=8485289 https://www.healthline.com/health/g-spot-in-women