I don't have the full Youtube screen working in my Android Studio app WebView

Question

The fullscreen mode does not work in my application when I click on the open full screen button. I have a tab application and I can't insert the code from the video tutorials. Please help

override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
        //returning our layout file
        //change R.layout.yourlayoutfilename for each of your fragments
        val v = inflater.inflate(R.layout.fragment_slideshow, container, false)
        val mWebView = v.findViewById<View>(R.id.webviewSlide) as WebView
        mWebView.loadUrl("https://www.youtube.com/")
        



        // Enable Javascript
        val webSettings = mWebView.settings
        webSettings.javaScriptEnabled = true

        // Force links and redirects to open in the WebView instead of in a browser
        mWebView.webViewClient = WebViewClient()



        mWebView.canGoBack()
        mWebView.setOnKeyListener(View.OnKeyListener { _, keyCode, event ->
            if (keyCode == KeyEvent.KEYCODE_BACK
                && event.action == MotionEvent.ACTION_UP
                && mWebView.canGoBack()) {
                mWebView.goBack()
                return@OnKeyListener true
            }
            false
        })




        return v
    }


    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
        //you can set the title for your toolbar here for different fragments different titles
        activity!!.title = "Home"
    }


}