margin end/right is not working on item in constraint layout

First see the layout for my point

enter image description here

Here is XML

 <androidx.constraintlayout.widget.ConstraintLayout
        android:id="@+id/mainCL"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintTop_toBottomOf="@id/appBarLayout"
        >

        <TextView
            android:id="@+id/bankInfoHeadingTV"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="36dp"
            android:layout_marginTop="40dp"
            android:layout_marginEnd="8dp"
            android:fontFamily="@font/montserrat_semibold"
            android:text="Bank Information"
            android:textColor="@color/black"
            android:textSize="16sp"
            android:textStyle="bold"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent" />

        <ImageView
            android:id="@+id/bankInfoIconIV"
            android:layout_width="42dp"
            android:layout_height="32dp"
            android:src="@drawable/card"
            app:layout_constraintBottom_toBottomOf="@id/bankInfoHeadingTV"
            app:layout_constraintStart_toEndOf="@id/bankInfoHeadingTV"
            app:layout_constraintTop_toTopOf="@id/bankInfoHeadingTV" />

    </androidx.constraintlayout.widget.ConstraintLayout>

I want to put some space between bankInfoHeadingTV and bankInfoIconIV.
So it put the margin of 30dp at the end of bankInfoHeadingTV but it is not working.
Margin start with bankInfoIconIV is working but why margin end with bankInfoHeadingTV is not working?