[REPOST] Trying to instal High Sierra, having two issues

Hello, I am trying to install dual boot Windows 10 and macOS High Sierra on separate drives. But I have two questions/issues.

My specs: Ryzen 5 2600X, ASUS TUF b450 , 16GB RAM, 120GB WD Sata SSD (for macOS), 240GB WD m.2 SSD (Windows already installed)

Guide I followed: https://hack.slim.ovh/mojave/#/

Issues: 1. When I’m copying “SharedSupport” from downloaded Install High Sierra to my USB some files are copied successfully but after a while I get a message “Could not acces Mac volume”.

1. When I’m booting the installer using Clover (I select OS X BASE SYSTEM) it goes on for a while then it shows a crossed-out circle and the text gets unreadable. I’m going to try different FakeSMC and different USB ports - will it work?

Please help me - thanks in advance

EDIT: Just out of curiosity, what can go wrong when hackintoshing? Can I break something? Like my hardware?

EDIT 2: Idk what happend to this tutorial, literally this website and it YouTube vid is 404. It used this newer method with the prelinked kernel or something like that, otherwise just a basic tutorial using BDU, Disk Manager and TransMac