[yumraj]

> The backbone of all religions is based on the personal mystical experiences of individuals like Jesus, Mohammad, Budha and many others.

Many, not all. Basically newer religions that were founded by an individual such at the ones you mentioned. Ancient, but still practiced, religions, such as Hinduism, Zoroastrianism, Native American religions and so on have a different, more nuanced, origin.

[Mediterraneo10]

Zoroastrianism was founded by an individual: Zoroaster. Traditionally it has been viewed as the product of an individual (drawing on some elements of the prevailing religion) just like Christianity, Manichaeism or Buddhism, though details of the founder's biography are now lost to time.

[yumraj]

Thank you for correcting me about Zoroastrianism.