Do you see more information in the log files? ( in storage/logs )

There is nothing in storage/logs. More over I tried opening a new project with: v7 - creating it passed successfully but if failed to open the default welcome page v6 - everything works smoothly

Strange, you can try to run composer clearcache and try it again (if any package in your cache is corrupt it could create an error)

Else I honestly don't know.

in root try it laravel new projname --force

I want to believe there is a problem with Composer. Because when creating a new project, it is impossible to have a problem originating from Laravel. My recommendation is to re-install Laravel's files by deleting composer from UserData from the directory where the globally received data is stored.

Did you try to check Laravel's logs folder or Apache's logs?

I noticed that there is a spelling mistake exist in your command.

Please try to reinstall Laravel using this command:

composer create-project laravel/laravel proj-name

I have tried few more times with various setups and ended up with same results (all in windows 10 env). What I did is install virtualbox with ubuntu 20.04 and everything went smoothly.