I find it hard to believe that by merely reciting the Buddha’s name, I could obtain rebirth to the Pure Land. My brother said that the Sutras were altered, and that videos about rebirth used professional actors.
I do not blame you for being skeptical. I would be too regarding the authenticity of your sources.
Personally, I believe it because my teacher, the late Great Master Xuan Hua said so. He would not lie to me nor has he ever lied to anyone about Buddhism.
Furthermore, I consult the original Buddhist Scriptures known as the Great Treasury Scriptures 大藏經.
They are recognized by all Buddhist experts as the indisputable teachings of the Buddha.
After you have planted more blessings with Mahayana, you too will believe.