无法在 nginx 中从 https 重定向到 http

大家好。购买了以前由另一个人拥有的域。旧域的 google 索引中有带有 https 的页面。我要上传到这个域的网站在 http 上工作，所以当我从 https 访问页面时需要重定向到 http。我搜索了互联网，尝试了很多选项 - 它不起作用。

这是我的 nginx 配置：

user nginx;
worker_processes auto;
error_log /var/log/nginx/error.log;
pid /run/nginx.pid;

events {
    worker_connections 1024;
}

http {
    access_log off;

    sendfile            on;
    tcp_nopush          on;
    tcp_nodelay         on;
    keepalive_timeout   65;
    types_hash_max_size 2048;
    client_max_body_size 10M;

    include             /etc/nginx/mime.types;
    default_type        application/octet-stream;

    include /etc/nginx/conf.d/*.conf;


server {
    listen       myip:80;
    server_name .mysite12.com;

    location / {
        root   /home/site12;
        index  index.php;
if ($scheme = https) {
    return 301 http://$host$request_uri;
}
        if (!-e $request_filename) {
               rewrite ^ /index.php last;
               break;
        }
    }

    location ~ \.php$ {
        root           /home/site12;
        try_files $uri =404;
        fastcgi_pass   unix:/run/php-fpm/php-fpm.sock;
        fastcgi_index  index.php;
        fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;
        include /etc/nginx/fastcgi_params;
    }
}


}

添加

if ($scheme = https) {
    return 301 http://$host$request_uri;
}

在我看来，这是最合乎逻辑的选择，但它不起作用......帮助我从 http 重定向到 https