How to get the list of inserted ids from the insert() method to use with the syncWithoutDetaching() method?

I have Files and Folders models that are related by a many-to-many relationship with a folder_file pivot table.

I want to insert files in bulk using the insert() method, then use the list of inserted ids with the syncWithoutDetaching() method to update the pivot table, | first create the $data_array in a foreach loop that does other things as well:

$data_array = [];
foreach (...) {
    // ...
    $data_array[] = $row;
}

then I want to insert the data and update the pivot table:

File::insert($data_array);
$folder->files()->syncWithoutDetaching($array_of_inserted_ids);

Is it possible to get the list of inserted ids from the insert() method? Or maybe there is a more efficient way for better DB performance?

At first I just wanted to create the record and update the pivot table inside the foreach loop that creates the $data_array so that on every iteration it would create and update the tables, but that could be bad for performance with that many queries?