Create a new user using postgres/ please help needed

Hi all,
I'm using kali linux 2020.2 on a raspberry Pi
what I am trying to do is to configure PostgresSQL Database
the problem is getting the following error message
createuser: error: could not connect to database postgres: could not connect to server: No such file or directory
Is the server running locally and accepting
connections on Unix domain socket "/var/run/postgresql/.s.PGSQL.5432"?

please help me with how to solve this issue?

Thank you!

did u find any solution?

I have read all the related posts on the subject, they didn?t solve my problem, so it's different. I don?t know exactly how, I can provide any extra info that is required.