nginx proxy_pass doesn't work in wordpress admin and returns 404

i have a main domain that is exampel.net and a blog service to name wp-exampel.site.cloud i need to open blog with this url : exampel.net/blog so i did this in my nginx :

location ^~ /blog {

        rewrite /blog/(.*) /$1  break;
        proxy_http_version 1.1;
       proxy_set_header Host $http_host;
        proxy_request_buffering off; # Disable any internal request  bufferring.
        proxy_pass http://wp.lunato;
        server_name_in_redirect off;
     #   proxy_set_header Host $host:$server_port;

    }

it works fine when i open exampel.com/blog

but when i try to use admin of wordpress the /blog remove from url it’s ok when i open exampel.net/blog/wp-admin but /blog will remove when i open exampel.net/wp-admin/.edit.php or other pages in menu of wordpress admin