Installation requirement ...

Hi, thanks for reporting your issue. Could it be that your composer minimum stability is set to stable? Not all modules are stable releases. See https://getcomposer.org/doc/04-schema.md#minimum-stability

Yes Your are right, I have change the settings and its works thanks
but as this is the default composer scaffolded from drupal.org I think its better to specify it in the readme of the module

This is not this module it’s fault. This is also how Drupal and composer work together. So closing this as work as designed.