LazyColumn{
    items(movies){
        MovieCard(it)
    }
}

MovieCard(movie: Movie){
    Text(movie.name)
    LazyColumn{
        items(movie.reviews){
            ReviewItem(it)
        }
    }
}

java.lang.IllegalStateException: Nesting scrollable in the same direction layouts like ScrollableContainer and LazyColumn is not allowed. If you want to add a header before the list of items please take a look on LazyColumn component which has a DSL api which allows to first add a header via item() function and then the list of items via items().

Modifier.nestedScroll

LazyColumn{
    movies.forEach { movie ->
         item {
              Text(movie.name)
         }
         items(movie.reviews){
             ReviewItem(it)
         }
    }
}

LazyColumn{
    items(movies){
        MovieCard(it)
    }
}
MovieCard(movie: Movie){
    Text(movie.name)
    LazyColumn{
        items(movie.reviews){
            ReviewItem(it)
        }
    }
}

item { CardHeader() } items { … } item { CardFooter() }