How to setup and configure XTLS-Vision on my own domain, without REALITY?

[iiMouse]

Okay, I have the latest Debian VPS, domain, wildcard SSL certificate, and a basic static site with nginx. Now I wanted to setup xray-core, but I immediately got stumped.

1. I installed it with XTLS/Xray-install, but I heard you're supposed to create a linux user for xray and add permissions, but which permissions? Instructions are very unclear. Should I just use "root" option?
2. So next I should use sample config VLESS-TCP-XTLS-Vision. But again, instructions are pretty minimalistic. Especially proxy_pass https://www.lovelive-anime.jp; line in nginx config is extremely suspect; I don't want to "pass" traffic to the external site like in REALITY, I want to use my own static site.

P.S. No, I don't want to "steal oneself" with REALITY.