In scrollview default size or custom design of scrollview in xaml

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C#

XAML

WPF

dotnet-nuke

UWP

In my Scrollview, Its width is thin by default, When hovering it, its width becomes normal.
But I want a customorized scrollview with a fixed width in xamarin or always default scroll
Both vertical and horizontal scroll
Any Suggestion Please

What I have tried:

<ScrollView VerticalScrollBarVisibility="Always" HorizontalScrollBarVisibility="Always" VerticalOptions="FillAndExpand" >
                                        <StackLayout
                                            Padding="0,0,0,0"
                                            BackgroundColor="{DynamicResource BrandComplementBackgroundColor}"
                                            HorizontalOptions="Fill"
                                            Orientation="Vertical"
                                            VerticalOptions="FillAndExpand"
                                            Parent="">
                                            <FlexLayout
                                                BackgroundColor="Red"
                                                BindableLayout.ItemsSource="{Binding ChipSetCollection}"
                                                Direction="Column"
                                                JustifyContent="Start">
                                                <BindableLayout.ItemTemplate>
                                                    <DataTemplate>
                                                        <views:ChipSetItemTemplate />
                                                    </DataTemplate>
                                                </BindableLayout.ItemTemplate>
                                            </FlexLayout>
                                        </StackLayout>
                                    </ScrollView>