It’s not… easy but it’s also not 20 pages difficult, unless you wanna do sinlge GPU passtrough, then that’s black magic.
Here is the guide I used when setting it up
This along with the arch wiki’s page on GPU passtrough should be enough to get you setup
E: Pro tip - pay close attention to section 2.3 Gotchas in the arch wiki, this sh!t had me stuck for a while on my system
Gentoo, it just works