I tried making the character Sachiko Juraku from Kakegurui Twin Manga. This is also the closest I could get to the school uniforms used in Kakegurui. I also made this in hopes of finding other fans of the manga/show that have suggestions.
I am not interested in school uniforms and cannot give advice. Just use the search function here, maybe you'll find something you like (I think this look is quite good: https://gw2style.com/look.php?id=12963 )