Composer error while trying to create a project with Laravel 5.0

I want to create a project with Laravel 5.0 so I typed composer create-project laravel/laravel laravel 5.0 but it returns this **Your requirements could not be resolved to an installable set of packages.

Your requirements could not be resolved to an installable set of packages.

Problem 1
    - laravel/framework v5.0.9 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system.
    - laravel/framework v5.0.8 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system.
    - laravel/framework v5.0.7 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system.
    - laravel/framework v5.0.6 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system.
    - laravel/framework v5.0.5 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system.
    - laravel/framework v5.0.4 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system.
    - laravel/framework v5.0.35 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system.
    - laravel/framework v5.0.34 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system.
    - laravel/framework v5.0.33 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system.
    - laravel/framework v5.0.32 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system.
    - laravel/framework v5.0.31 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system.
    - laravel/framework v5.0.3 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system.
    - laravel/framework v5.0.29 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system.
    - laravel/framework v5.0.28 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system.
    - laravel/framework v5.0.27 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system.
    - laravel/framework v5.0.26 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system.
    - laravel/framework v5.0.25 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system.
    - laravel/framework v5.0.24 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system.
    - laravel/framework v5.0.23 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system.
    - laravel/framework v5.0.22 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system.
    - laravel/framework v5.0.21 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system.
    - laravel/framework v5.0.20 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system.
    - laravel/framework v5.0.2 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system.
    - laravel/framework v5.0.19 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system.
    - laravel/framework v5.0.18 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system.
    - laravel/framework v5.0.17 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system.
    - laravel/framework v5.0.16 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system.
    - laravel/framework v5.0.15 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system.
    - laravel/framework v5.0.14 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system.
    - laravel/framework v5.0.13 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system.
    - laravel/framework v5.0.12 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system.
    - laravel/framework v5.0.11 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system.
    - laravel/framework v5.0.10 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system.
    - laravel/framework v5.0.1 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system.
    - laravel/framework v5.0.0 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system.
    - laravel/framework 5.0.30 requires ext-mcrypt * -> the requested PHP extension mcrypt is missing from your system.
    - Installation request for laravel/framework 5.0.* -> satisfiable by laravel/framework[5.0.30, v5.0.0, v5.0.1, v5.0.

I don't why I receive this error, because my PHP version is 7.4.8 and I just downloaded and installed Composer.

So if you know how can I solve this problem, please let me know, I would really appreciate that...

Thnak

via Chebli Mohamed