I didn’t become an atheist by waking up one day and proclaim it. I am well aware of the culture I was born in.
I respect the aspects of Sanatana dharma that make sense. I despise the aspects of it like caste system by birth and cow dung curing cancer and diabetes nonsense.
Hinduism is definitely mythical. This is why when westerners talk about Brahma Puran and Vishnu Puran etc, they call it Hindu mythology. It has lots of super natural mind numbing things that are described in it. Out of physics realm. Hence mythical.
I apply the same logic to Islam too. It’s no different to Hindu Mythology. Flying Horses, talking ants, Adam being 90 feet tall , Eve made from his rib etc.. pure mythology in my book. It all depends on how deep you are into mythology and how much your brain can believe in things that are supernatural.