need help setting this up fallback

[samoilov]

Hello everyone. I need help setting this up fallback
I want to set up a fallback so it works correctly.

Currently, if I access port 8888, a certificate from one of the serverNames is displayed, so I don't want that.

Locally, I have NGINX running on port 7576 on my machine, and there's a special stub site (and it works correctly) with the necessary certificate, etc.
On the same host, there's

My test section

    {
      "tag": "dog2_reality",
      "listen": "0.0.0.0",
      "port": 8888,
      "protocol": "vless",
      "settings": {
        "clients": [],
        "decryption": "none",
        "fallbacks": [
          {
            "alpn": "",
            "dest": "7576",
            "name": "",
            "path": "",
            "xver": 0
          }
        ]
      }

I don't really understand how to do this correctly. It can be applied in the kernel, then in the host.
But I still don't understand how to do it correctly.

Sorry, I used Google Translate.