Remove item from database in Laravel

I am beginner in Laravel and php. I use in my project (Laravel 7) this component: https://packagist.org/packages/kalnoy/nestedset

I need a function to delete the selected branch (record) along with the records "deep".

I try with this code:

public function destroy(Request $request, int $parentId, int $id)
    {
        $node = $this->model->where('id', $id)->get();

        $arrayToDelete = array();
        $traverse = function ($categories) use (&$traverse, &$arrayToDelete) {
            foreach ($categories as $category) {
                $arrayToDelete[] = $category->id;
                $traverse($category->children);
            }
        };
        $traverse($node);

        foreach ($arrayToDelete as $value) {
            $this->model->where('id',$value)->delete();
        }
        return redirect()->route('subcategory.index', ['id' => $id, 'parentId' => $parentId])->with('success', 'Rekord usunięty poprawnie');
    }

but I have error:

SQLSTATE[23000]: Integrity constraint violation: 1451 Cannot delete or update a parent row: a foreign key constraint fails (cms.products, CONSTRAINT products_category_id_foreign FOREIGN KEY (category_id) REFERENCES categories (id)) (SQL: delete from categories where id = 1)

My migration file:

Schema::create('categories', function (Blueprint $table) {
            $table->bigIncrements('id');
            $table->string('category_name', 155);
            $table->string('description', 155)->nullable();
            $table->string('keywords', 155)->nullable();
            $table->longText('content')->nullable();
            $table->char('enable', 1)->default(0);
            $table->string('photo', 155)->nullable();
            $table->bigInteger('order')->default(0);
            $table->string('slug', 160)->nullable();
            NestedSet::columns($table);
            $table->engine = "InnoDB";
            $table->charset = 'utf8mb4';
            $table->collation = 'utf8mb4_unicode_ci';
        })

In manual: https://packagist.org/packages/kalnoy/nestedset

I found this:

Deleting nodes To delete a node:

$node->delete(); IMPORTANT! Any descendant that node has will also be deleted!

IMPORTANT! Nodes are required to be deleted as models, don't try do delete them using a query like so:

Category::where('id', '=', $id)->delete();

How should I change my code to. did the deletion work correctly?

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