Error establishing a database connection, how to create a wordpress database?

Question

CMS

Guys, I have such a problem - I set up a virtual host in lampp to the c wordpress directory in home/user/projects
, installed Wordpress, created a wordpress database in mySQL, and then such a game. I've tried all the google methods. Changed all settings.
Previously, only through lampp I put it right where everything went by default - in opt/lampp/htdocs. There, wordpress works without error, but there is a root space, which makes it somewhat inconvenient to work there.
Tell me where you screwed up.

Answer 1

And you put the correct password there, you never know what?

Answer 2

Exactly "lampp"?? Not "lamp"? How are the rights to folders set? listing config.php to studio....