如何使用Nginx修复http重定向？

我有一个网页,http重定向有点破碎.

目前的行为是这样的：

www.example.com,example.com,http://www.example.com,http://example.com,https://www.example.com都被重定向到https://www.example.com

和

https://example.com收到错误说拒绝连接.

我希望行为像这样：

example.com,https://example.com重定向到https://example.com

www.example.com,https://www.example.com重定向到https://www.example.com

这是我的Nginx配置文件

server {
       listen 80 default_server;
       listen [::]:80 default_server;
       server_name example.com www.example.com;
       return 301 https://$server_name$request_uri;
}

server {
        add_header Strict-Transport-Security "max-age=63072000; includeSubdomains; preload";
        listen 443 ssl http2 default_server;
        listen [::]:443 ssl http2 default_server;
        include snippets/ssl-example.com.conf;
        include snippets/ssl-params.conf;

        root /var/www/html;

        index index.html index.htm index.nginx-debian.html;

        server_name _;

        location ~ /.well-known {
                allow all;
        }

        location / {
                try_files $uri $uri/ =404;
        }
}

原因是因为我希望这些链接起作用

https://www.ssllabs.com/ssltest/analyze.html?d=example.com

https://www.ssllabs.com/ssltest/analyze.html?d=www.example.com

https://hstspreload.org/?domain=example.com

https://hstspreload.org/?domain=www.example.com