I think you need to have a FMW Infrastructure version of Weblogic.You could verify this by downloading and installing SOA QuickStart (https://www.oracle.com/middleware/technologies/soasuite/downloads.html ). Which is a JDeveloper with a integrated weblogic that runs SOA Suite and OSB. And thus has a FMW Infrastructure.
By the way, to have it spinned up with a JDK 8 Update 181+ you need to install a JavaDB yourself. See https://blog.darwin-it.nl/2019/03/javadb-not-bundled-anymore-with-jdk-8.html for that.
Thanks Martien, We are using Oracle JCS weblogic server which should be having FMW infrasturcture already.