Would you be luckier to be her 1st, knowing that it would be short-lived and 22 others would follow after you?
All experienced people start off inexperienced. At least with experienced people, they are more likely to know what they want.
I am a woman the same age as you. I am only interested in long-term monogamy. As such, I have a lot of sexual and relationship experience due to my age, but all if it is with just 3 people. Not only that, but all of my experience is with who, themselves, had never previously had casual sex experience.
The first 2 were young and inexperienced like me, and they initially thought they wanted the same thing that I want. But as time went on, they realized that they felt confined by long-term monogamy and actually wanted more experiences with more people. After we broke up, they proceeded to have a series of flings and casual sex. They did have some attempts at long-term polyamorous relationships, but nothing that lasted more than a year or two.
By the time I met my 3rd partner (who I have been with a long time now), I was pretty gun shy about dating men. My experience was that men talk a big game about wanting a stable partner for the long haul, but get bored and break your heart.
What helped me give my new partner a chance was that we were both older by this point and more settled into our lives. He had plenty of relationship experience by that point, and his history demonstrated that he stayed dedicated in long-term monogamous relationships and that he was not interested in casual sex, despite plenty of opportunities for it.
If I were advising someone whose goal was to only ever have one partner in their life, my advice would be to only date people with a lot of life experience. Inexperienced people are a wild card. You can't manipulate them into only ever wanting you. Maybe back in the day, you could lock them into marriage, but modern DNA evidence suggests that a huge percentage of children back then (some estimates as high as 25%) were not genetically related to their fathers, so I'm not so sure that marriage was actually what you imagine it was.
If you want to date women who are fully dedicated to long-term monogamy, then date people with a demonstrated history of exactly that. (However, be aware that this only works if you yourself have such a history. You can't expect to date women with high standards if you don't actually live up to those standards.)