There are few possible steps that can help you to fix this issue.

1. You can pass prop nestedScrollEnabled in both flatlist and sectionlist
2. Wrap both lists in an individual View and Give proper heights to both views, so they can occupy fixed height in the screen

So now in a screen both views have fixed height and both are scrollable.

• If this won't work then check by removing Scrollview.
• you can also use SafeAreaView inside SafeAreaProvider instead of Scrollview.