SSMS won't connect to SQL Server 2019

I have Microsoft SQL Server manager version 18.8 installed to my PC, as well as SQL Server 2019. Both are installed on my PC. I need to locally create and manage a database.

I am trying to connect the SSMS but it's not working.

I entered to the services and restarted everything

and I also enabled TCP/IP in configuration manager.

what should I do?

Solution

You have a named instance of SQL Server named SQLEXPRESS (this is shown in parentheses within the SQL Server service name "SQL Server (SQLEXPRESS)" in the Windows Services MMC snap-in.
You need to specify the instance-name in the Server name: field.
You can only omit the instance-name for default instances.

You need to specify .\SQLEXPRESS or (local)\SQLEXPRESS to be able to connect.

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