I want to simply connect database of hostinger which I have created.You can see my settings of laravel and hosting name and user name etc in image.
This is error which I have taken *[PDOException]
SQLSTATE[HY000]  Unknown MySQL server host 'mysql.hostinger.web.tr' (
This looks like a host problem and not a laravel specific problem. I would contact your host and confirm the hostname you should be using and check that it matches that in your .env file.