FBA editing web.config files

Hi,

I have previously edited machine.config file and updated connectionstring,MembershipProvider and Role Manager provider details and it was workling fine.

In my production I don't want to edit machine.config files so I am looking to edit  SharePoint Central Administrator,SecurityTokenSAerviceApplication and SharePoint Webapplication web.config files.

when I open the SharePoint Webapplication web.config I couldn't find the connectionstring to add the the below details

<add name="FBADB" connectionString="Server=DEV-SP2016;Database=aspnetdb;Integrated Security=true"/>

can I know where I shold add this connection string details in SharePoint Central Administrator web.config and harePoint Webapplication web.config files.

thanks