Quick steps to get a ssl cert and key from let's encrypt

  sudo dnf install certbot
  certbot -a manual certonly

After entering some details and confirming ownership of your site, you'll need to enter the cert from

  /etc/letsencrypt/live/www.example.com/fullchain.pem

And then you'll need to decrypt the key so google can use it:

  sudo openssl rsa -inform pem -in /etc/letsencrypt/live/www.example.com/privkey.pem -outform pem | less