How to add fragment in Activity

AddFragmentInActivity.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <fragment android:name="com.yes.no.possibleFragment"
        android:id="@+id/fragment_possible"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        />
  
</androidx.constraintlayout.widget.ConstraintLayout>