activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<layout>

    <data>

    </data>

    <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">

        <androidx.fragment.app.FragmentContainerView
            android:id="@+id/nav_host_fragment"
            android:layout_width="0dp"
            android:layout_height="0dp"
            app:layout_constraintBottom_toTopOf="@+id/bottom_nav"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent" />

        <com.google.android.material.bottomnavigation.BottomNavigationView
            android:id="@+id/bottom_nav"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@color/colorTextIcons"
            app:itemBackground="@color/colorTextIcons"
            app:layout_behavior="@string/hide_bottom_view_on_scroll_behavior"
            app:layout_constraintBottom_toBottomOf="parent"
            app:menu="@menu/menu_bottom_main" />

    </androidx.constraintlayout.widget.ConstraintLayout>
</layout>