Navigate to Social-Media Directory and ...
javac -d bin -cp "lib/*" $(find src -name "*.java") && java --module-path lib --add-modules javafx.base,javafx.controls,javafx.fxml,javafx.graphics -cp "bin:res:lib/*" main/Main
This command line should work on linux & mac. For Windows try with WSL. If WSL isn't available then, replace ':' with ';' and .so files in lib folder with .dll files.
Or, download the zip file containing jar from here, extract it and run it using...
java -jar SocialMediaApp.jar
├── bin/
├── lib/
├── res/
├── src/
└── social-media.db