Because these are legacy versions, you should avoid untrusted "one-click" sites and use reputable archives:
This version of the companion app is widely cited as compatible with Android 4.2 through 9.0. download magisk manager for android 4.4.2
Installation on KitKat is more complex than on modern devices because many KitKat kernels do not support features like "MagiskHide". topjohnwu/Magisk: The Magic Mask for Android - GitHub Because these are legacy versions, you should avoid
Search for version 7.4.0 or v22.1 to find verified APKs for older devices. How to Install on Android 4.4.2 Because these are legacy versions
Scroll back to versions like v22.1 or v18.1 .
This was the final major release to officially support Android 4.4 KitKat.