@jstone it was very easy, the drivers downloaded everything in a comfortable way and all I did was dxvk async room, so I downloaded it with proton qt, now I have a ready-to-play machine and I recommend you MAXIMUM SETTINGS cloud was interested in your operating system, they probably want to use it on their PCs. https://maximumsettings.com/
I recommend booting from a Windows PE live disc instead of installing Windows, the UEFI updater should run on that. I have updated an IdeaPad that way.
If you do, just be sure to put a big bloody warning that Lenovo is stupid and it may look like the Legion Go is totally off and doing NOTHING for up to 10 minutes during the update. Cause some genius at Lenovo though that no display output and no LEDs during BIOS update for extended periods of time was somehow a good idea.