how does nginx work

[Escanor-87]

Sorry for oppening new issue but I have another notise:
every single sub.domain.com, domain.com, sub.domain.xyz I try to reverse_proxy with caddy or nginx is alwayz with REALITY's sertificate... Don't know how it works, but can't redirect my another ports))
I think it's because of these:
if ($host !~* ^(.+.)?domain.com$ ){return 444;}
if ($scheme * https) {set $safe 1;}
if ($ssl_server_name !* ^(.+.)?domain.com$ ) {set $safe "${safe}0"; }
if ($safe = 10){return 444;}