Material card with elevation & shadow : using cardElevation=8dp and (fundamental) layout_margin= 5dp (a greater value isn't work, must be similar to that of the cardElevation to work)

card_home.xml

<?xml version="1.0" encoding="utf-8"?>
<com.google.android.material.card.MaterialCardView 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"
    style="@style/HomeCard.White"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_margin="@dimen/_5ssp"
    app:cardCornerRadius="12dp"
    app:cardElevation="8dp">


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

        <TextView
            android:id="@+id/room_name_txt"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="16dp"
            android:layout_marginTop="16dp"
            android:text="Home Name"
            android:textAppearance="@style/Text.Bold"
            android:textSize="20sp"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent" />

        <TextView
            android:id="@+id/devices_label_txt"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="8dp"
            android:text="Devices"
            android:textAppearance="@style/Text.Regular"
            android:textSize="18sp"
            app:layout_constraintBottom_toBottomOf="@+id/num_devices_txt"
            app:layout_constraintStart_toEndOf="@+id/num_devices_txt" />

        <TextView
            android:id="@+id/num_devices_txt"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="32dp"
            android:text="0"
            android:textAppearance="@style/Text.Regular"
            android:textSize="18sp"
            app:layout_constraintStart_toStartOf="@+id/room_name_txt"
            app:layout_constraintTop_toBottomOf="@+id/room_name_txt" />

        <ImageView
            android:id="@+id/arrow_rg_img"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginEnd="16dp"
            android:backgroundTint="@color/white"
            app:layout_constraintBottom_toTopOf="@+id/room_name_txt"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/room_name_txt"
            app:srcCompat="@drawable/ic_chevron_right_32dp" />

        <ImageView
            android:id="@+id/dev_01_img"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="24dp"
            android:layout_marginBottom="32dp"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintStart_toStartOf="@+id/num_devices_txt"
            app:layout_constraintTop_toBottomOf="@+id/num_devices_txt"
            app:srcCompat="@drawable/placeholder_circ_black_24dp" />

        <ImageView
            android:id="@+id/dev_02_img"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="16dp"
            app:layout_constraintBottom_toBottomOf="@+id/dev_01_img"
            app:layout_constraintStart_toEndOf="@+id/dev_01_img"
            app:srcCompat="@drawable/placeholder_circ_black_24dp" />

        <ImageView
            android:id="@+id/dev_03_img"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="16dp"
            app:layout_constraintBottom_toBottomOf="@+id/dev_02_img"
            app:layout_constraintStart_toEndOf="@+id/dev_02_img"
            app:srcCompat="@drawable/placeholder_circ_black_24dp" />

        <ImageView
            android:id="@+id/dev_04_img"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="16dp"
            app:layout_constraintBottom_toBottomOf="@+id/dev_03_img"
            app:layout_constraintStart_toEndOf="@+id/dev_03_img"
            app:srcCompat="@drawable/placeholder_circ_black_24dp" />

        <ImageView
            android:id="@+id/badge_img"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="16dp"
            app:layout_constraintBottom_toBottomOf="@+id/dev_04_img"
            app:layout_constraintStart_toEndOf="@+id/dev_04_img"
            app:srcCompat="@drawable/circle_primarycolor" />

        <TextView
            android:id="@+id/plus_symb_txt"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="+"
            android:textColor="@color/white"
            app:layout_constraintBottom_toBottomOf="@+id/badge_img"
            app:layout_constraintEnd_toEndOf="@+id/badge_img"
            app:layout_constraintHorizontal_bias="0.12"
            app:layout_constraintStart_toEndOf="@+id/badge_img"
            app:layout_constraintStart_toStartOf="@+id/badge_img"
            app:layout_constraintTop_toTopOf="@+id/badge_img" />

        <TextView
            android:id="@+id/num_dev_badge_txt"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="10"
            android:textAppearance="@style/Text.Regular"
            android:textColor="@color/white"
            app:layout_constraintBottom_toTopOf="@+id/plus_symb_txt"
            app:layout_constraintStart_toEndOf="@+id/plus_symb_txt"
            app:layout_constraintTop_toBottomOf="@+id/plus_symb_txt" />
    </androidx.constraintlayout.widget.ConstraintLayout>

</com.google.android.material.card.MaterialCardView>

<!-- Notes :
- using tools:text = "..." make textview do not show in card -->