Trouble redirecting www to https

My attempt is in the last server block. Just note I replaced example.com with the actual domain in my app. Thanks.

server {
        listen 80 default_server;
        listen [::]:80 default_server;

        root /var/www/html;

        server_name _;

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


upstream my_nodejs_upstream {
 server 127.0.0.1:5000;
 keepalive 64;
}

server {

        root /var/www/html;

        # Add index.php to the list if you are using PHP
        index index.html index.htm index.nginx-debian.html;
    server_name glitzher.com; # managed by Certbot

        location / {
                proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
                proxy_set_header Host $http_host;
                proxy_set_header X-NginX-Proxy true;
                proxy_http_version 1.1;
                proxy_set_header Upgrade $http_upgrade;
                proxy_set_header Connection upgrade;
                proxy_max_temp_file_size 0;
                proxy_pass http://my_nodejs_upstream/;
                proxy_redirect off;
                proxy_read_timeout 240s;
        }

        location /api {
                proxy_pass http://localhost:3001;
        }


    listen [::]:443 ssl ipv6only=on; # managed by Certbot
    listen 443 ssl; # managed by Certbot
    ssl_certificate /etc/letsencrypt/live/example.com/fullchain.pem; # managed by Certbot
    ssl_certificate_key /etc/letsencrypt/live/example.com/privkey.pem; # managed by Certbot
    include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot
    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot

}
server {
    if ($host = example.com) {
        return 301 https://$host$request_uri;
    } # managed by Certbot

    if ($host = www.example.com) {
        return 301 https://$host$request_uri;
    }

        listen 80 ;
        listen [::]:80 ;
    server_name www.example.com example.com;
    return 404; # managed by Certbot


}