Do you want a temporary Drupal site to play with? You can easily generate a fully configured, disposable demo site for free on your own computer or on a hosted server.
On your own computer
php core/scripts/drupal quick-start demo_umami
When you’re done, stop the command. Removing the extracted folder will delete all changes from your system.
On a hosted server
Simplytest.me lets you run an evaluation site for 12 hours. Enter Drupal Core as the project name. Currently, version 8.6.5 does not spin up properly, so choose 8.6.4. In advanced options, select Bypass installation so you can choose the Demo Umami installation profile. You will need to use the subdomain from the URL as the database name, database user, and database password.