Once you have the part number, you can then use eBay to find used parts, where there are loads of decent places running proper businesses. It’s much better than the dodgy scrappies of old.
I use ilcats.ru for parts catalogues. It seems to be pretty reliable and whilst it’s unfortunately a Russian site, that is probably part of the reason for its existence. These sites in general are incredibly useful.
I used to use Euro Car Parts for the Passat which was great because it was a common car and there are three branches a short drive or a bike ride from me. My current cars are less common so it’s usually Autodoc that have them. However I would expect ECP to have plenty of Qashqai parts.
Also Nissan are bastards.