If you like Kiki Strike: inside the Shadow City by Kirsten Miller
Kirsten Miller has written another Kiki Strike novel called Kiki Strike: The Empress’s Tomb. Here are a few more titles you might enjoy:
Gregor the Overlander by Suzanne Collins.
When eleven-year-old Gregor and his two-year-old sister are pulled into a strange underground world, they trigger an epic battle involving men, bats, rats, cockroaches, and spiders while on a quest foretold by ancient prophecy. The first book in the Underland Chronicles.
Skulduggery Pleasant by Derek Landy.
When twelve-year-old Stephanie inherits her weird uncle's estate, she must join forces with Skulduggery Pleasant, a skeleton mage, to save the world from the Faceless Ones.
Maximum Ride: the angel experiment by James Patterson.
After the mutant Erasers abduct the youngest member of their group, the "birdkids," who are the result of genetic experimentation, take off in pursuit and find themselves struggling to understand their own origins and purpose.