fragment_frag_vertical_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout 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=".FragVerticalLayout">

    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <Button
            android:id="@+id/napolitaine"
            android:layout_width="0dp"
            android:layout_height="0dp"
            android:text="@string/napolitaine"
            app:layout_constraintBottom_toTopOf="@+id/royale"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent" />

        <Button
            android:id="@+id/royale"
            android:layout_width="0dp"
            android:layout_height="0dp"
            android:text="@string/royale"
            app:layout_constraintBottom_toTopOf="@+id/quatreFromages"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/napolitaine" />

        <Button
            android:id="@+id/quatreFromages"
            android:layout_width="0dp"
            android:layout_height="0dp"
            android:text="@string/quatrefromages"
            app:layout_constraintBottom_toTopOf="@+id/montagnarde"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/royale" />

        <Button
            android:id="@+id/montagnarde"
            android:layout_width="0dp"
            android:layout_height="0dp"
            android:text="@string/montagnarde"
            app:layout_constraintBottom_toTopOf="@+id/raclette"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/quatreFromages" />

        <Button
            android:id="@+id/raclette"
            android:layout_width="0dp"
            android:layout_height="0dp"
            android:text="@string/raclette"
            app:layout_constraintBottom_toTopOf="@+id/hawaii"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/montagnarde" />

        <Button
            android:id="@+id/hawaii"
            android:layout_width="0dp"
            android:layout_height="0dp"
            android:text="@string/hawaii"
            app:layout_constraintBottom_toTopOf="@+id/linearLayout2"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/raclette" />

        <LinearLayout
            android:id="@+id/linearLayout2"
            android:layout_width="424dp"
            android:layout_height="0dp"
            android:orientation="horizontal"
            app:layout_constraintBottom_toTopOf="@+id/pizzaperso"
            app:layout_constraintTop_toBottomOf="@+id/hawaii"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            tools:layout_editor_absoluteX="1dp">

            <Button
                android:id="@+id/pannaCotta"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_weight="1"
                android:layout_marginEnd="5dp"
                android:text="@string/pannacotta" />

            <Button
                android:id="@+id/tiramisu"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_weight="1"
                android:layout_marginEnd="5dp"
                android:text="@string/tiramisu" />
        </LinearLayout>

        <Button
            android:id="@+id/pizzaperso"
            android:layout_width="0dp"
            android:layout_height="0dp"
            android:backgroundTint="#F44336"
            android:text="@string/pizzaperso"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/linearLayout2" />

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