Option to install OS X not appearing in Clover, Xiaomi Mi Notebook Pro

Hello,

I'm using a Xiaomi Mi Notebook Pro and tried nearly everything, 3 different sticks, etc. but no matter what I do I'm just getting Windows as option to show up after booting from Clover.

I tried to install High Sierra to the stick manually (via command line and the tutorial from here: https://www.reddit.com/r/hackintosh/comments/7amizy/guide_installing_macos_high_sierra_on_the_mi/ ) and installed Clover afterwards using the top two options for customized installation.

I also tried using Unibeast with no success.

SecureBoot is turned off. I dont know what to do anymore. I've tried getting it in the list for more than 15 hours now. This is my last attempt. Do you have any idea?

Thank you in advance!