I have a website :
and I would like to know if Drupal would make it better or worse?
Drupal can't make it.
You have to make it better using Drupal.
Yes, I agree you must try Drupal it's such a good CMS.
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If Worpress is doing what you need, I would advise against moving to Drupal. Drupal is fantastic, but having used it several years I have found my Drupal clients need to spend more money and / or time on maintenance.
Drupal is a registered trademark of Dries Buytaert.