Can you provide websites that send religious books for free due to the inability to purchase them?

You can benefit from websites such as Talibat al-Ilm al-Shar'i (The Female Seeker of Sacred Knowledge), al-Mishkat, Ibn Taymiyyah Network, and Multaqa Ahl al-Hadith (Forum of the People of Hadith), which includes an excellent waqf library for downloading books.