I hope you can help me to fix my problem.

i am using wordpress for the first time, and i don’t know why i am getting Error establishing a database connection knowing that i have created the file wp-config.php by myself then i provided the informations of my database.
i create a virtual host because i need to work just in localhost.

for the information: I am using the above version below:

wordpress 5.5.1 / wampserver 3.2.3 / php 7.4.9 / mysql 5.7.31

thank you for your support !!!