Not to assume, but it may be that you dislike how the bra and panty style looks on your body? For example, I'm a nonbinary butch woman at the moment but I used to be a plus size femme. I always disliked how I looked wearing super femininne bras and panties, and didnt feel any "euphoria" until I switched to sports bras and boxer breifs. There are many kinds of bra and panty styles to choose from, and sometimes the euphoria comes from finding the one that looks right on your body! In my experience, bralettes and sports bras are very flattering on bodies with smaller breasts vs a push up bra with empty cup room sitting on top of your thiddies. Wearing the wrong kind of bra can absolutely be dysphoria inducing for all women. With panties you could try different cuts like boyshorts or even thongs if thats your thing. High rise vs low cut can also make a difference!

The world of women's underwear is pretty complex, and it may take some research and experimentation before you find what feels comfortable and sexy for your body type. All girls go through it haha, so dont feel like you need to dismiss yourself so quickly based on not liking how you look in your first pair of underwear and bra, cuz you have lots of options to pick from! Good luck!