You can easily reset a user password with Drush utility.
Go in your Drupal installation root and check if Drush is installed.
$ cd <app root> $ vendor/bin/drush status Drupal version : 9.3.2 Site URI : http://default DB driver : mysql DB hostname : localhost DB port : 3306
If you have this result, you have to install drush with the following command
$ composer require drush/drush
Set the password for the user somedrupaluser with arguments :
name : The name of the account to modify.
password : The new password for the account.
vendor/bin/drush user:password somedrupaluser somedrupalpassword
Enjoy!