iATKOS | United Kingdom

Hey guys,first I wanna say that I’m a total noob about this and I need some help.I’d like to do a hackintosh on my current laptop,I’d prefer to install macos in dual boot with windows,my specs are: Intel(R) Core(TM) i7-9750H CPU 2.60 GHz 16GB Ram DDR4 Motherboard: MS-16W1 PCI-Express 3.0 Gtx 1660 ti 6gb Ssd 512 gb I have some questions to ask first. 1)I noticed after some researches that high sierra would be the last os that supports my graphic card and since I wanna work with macos I definitely need the gpu working at its best,so is it high sierra the maximum or is there some way I can get it working on catalina or big sur? 2)Next question is,will everything on the windows side be lost,I heard u must install macos first and then install windows again,is there a way to keep windows on it’s own without damaging any of it’s content and installing a fully working macos througha partition? 3)Last thing I wanna say is that I don’t have access to the ethernet cable so I could only do this with wifi thanks in advance to everyone who’s gonna help me <3