Urban fantasy usually sucks I'm sorry. Oh dang there's a secret society of fantasy creatures living unseen in the modern world? Woahhhh!! Here's my hot take: the only good urban fantasy is like Shadowrun style where it's in your face and there's no great masquerade ass shit going on.
Listen if your OC is an urban fantasy set in London and you have a society of fairies living in a magical mirror world just beneath it and you're hoping it will someday get published and turned into a lukewarmly received mid-budget movie that everyone forgets about immediately, just like every other YA fantasy book, then more power to you. You live your truth.