We fall down from $500 just a while ago and when I last checked we are like in $385 .
I have a question here, I am not really good at bitcoin so I just want some explanations or something like that.
Will the price continue to fall or will it bounce again?
No one knows for sure
Is $500 the new ATH now?
No, ATH means all-time high. So it is the highest value it has ever been, which is something like $1244, it will always be $1244 until it breaks a price higher than $1244
It's just the most recent high
What is causing this?
No one knows.
a whale cashing out?
Shaking out weak hands?
something else?
Does this mean the end of the bull?

No one knows for sure, but I doubt it.