Where does one even begin to cure the foggy mind of the average Hindu of this day.
Do angels exist...This question could only have come from someone not conversant with the difference between dharmic and abrahamic worldviews.
Now first of all let us shed this cloak of sarv-dharm-sambhav and understand the difference between dharma and religion.
Dharma is not religion.You cannot call christianity and islam as Dharms...they are religions...revelatory religions which are history-centric,exclusivist,divide the world into a binary "Us vs Them" view and depend upon a circular logic of book provides the basis for my faith and theology and my faith says the book is the word of God and true.
These are dogmatic doctrines which have been advertised as faith systems and their sanctity depends upon unquestioning acceptance of each word as told in the so called book.
Sanatana Dharma on the other hand is not dependant upon any "book" to be revealed and is not hostage to any dogmatic doctrine.It is a philosophical enquiry,a knowledge system into the workings of the world,both physical and metaphysical; material and spiritual...in other words Bhautika and Adhyaatmic.
In between there is a level called Daivika which the sarv-dharm-sambhav fellows conflate with the concept of angels because it feels good in this age of liberalspeak to accept everything without question or scratching beyond the surface.
You could learn more about this here https://twitter.com/SkandaVeera/status/562523112491610112https://twitter.com/SkandaVeera/status/561832011191447552https://twitter.com/SkandaVeera/status/560077933167919104https://twitter.com/SkandaVeerahttps://mariawirthblog.wordpress.com/2014/09/14/what-is-religion-good-for/https://www.youtube.com/watch?v=4yz6ZL-TC94https://www.youtube.com/user/BreakingIndia
Also there is no such thing as Hindu Mythology.We have perfect terms for our works which are itihAsa,purAna,kAvya and darshana shAstra.