The standard behavior (*) for friendly URLs in Drupal is replacing special characters by a hyphen in the friendly URL.
For instance, without any input from the user,
conte-do. However, we need the character to be replaced by their corresponding non-accent ASCII values, such as
Currently, we manually edit the URL when creating content. Is there a way to automate it?
(*): I assume it's out-of-the-box behavior, but this Drupal instance had modules installed and configured by other persons, maybe it's not a default behavior.