How to fix error abandoned fzaninotto/faker packagist in composer 2.0.11 version and i used php 8.0.0?

The quick way is

composer remove fzaninotto/faker

Then install

composer require fakerphp/faker --dev

You can use the new package faker (fork).

Remove the faker abandoned

composer remove vendor/fzaninotto/faker

Install the new package

composer require fakerphp/faker

And replace it in your composer.json

"require-dev": {
    "fakerphp/faker": "^1.13.0",
}