Hello Mohamed,

In order to download NEET previous question papers kindly visit link given below,

https://www.google.com/amp/s/medicine.careers360.com/articles/neet-question-paper/amp

All the Best

Hey. 

Here's a link for some NEET sample papers

Https://medicine.careers360.com/articles/neet-sample-paper/amp

Apart from these papers, you can also practice a few questions given in the papers in the books that you have been referring to. Also, glance through the MCQs given in the NCERT exemplar.