I '24M' don't get one night stands '22F'

I met this girl (F/22) last weekend while partying. Everything was great, we both were having fun talking, even both uf us were flirting with eachother. We ended up interchanging phone numbers and have been talking whole week. She told me to visit her this weekend and it was clear as day that she wanted to have sex with me(she is very direct on this matter and even told me to get condoms). It was supposed to be a date at first and then "we would see what happens". She even told her mom about me and that she laughed so much with me.

We met and the vibe was amazing, we shared some stories, told personal stuff, drank some cocktails and overall we both had fun. At the end of the date we kissed several times and she told me to go to her house to sleep there. She showed me her house and eventually we had sex. I was pretty nervous about it and it's been years since I had sex (For context my last girlfriend was asexual, I like sex but it's not really that important for me) so I didn't last very long.

The vibe changed a lot but we talked a bit about it and everything seemed cool. We slept a lot and the next morning we joked about this specifically because we both hadn't slept good for a while, she told me "I guess it's because I feel comfortable about you", this stucked with me for a bit. We had a quick breakfast together and left her house because she had work later, she kissed me and we parted ways.

Next day I talk to her and ask her if she wanted to keep talking and knowing eachother, and she tells me that she really had fun with me but we don't match sexually and that's a big deal for her.

I was hoping to keep knowing her because I think she is interesting but I ended up a bit hurt.

I guess with every experience you learn something new but I keep thinking I did something wrong and feel somewhat ashamed of my sexual performance. I don't usually go on dates and this was the first time that I had sex on the first date, so I don't really know if this "throwaway" relations are for me tbh. I get that most people are fine with one night stands but I feel used and discarded.

How can I become fine with these kind of relationships? How do I embrace them?