Magento 2 get Product Collection creates issue on preparecollection

Question

I am using Magento 2.2.7. On custom product grid _prepareCollection() I tried to get all product collection by

$collection = $this->_productFactory->create()->getCollection();

but it gets only enabled & in_stock products. If I get count($collection->getData()) it shows all product count. but If I tried with $collection->count() it get only enabled and in_stock product count. How I get all products in grid through $this->setCollection($collection);