You first need to define what you are calling a miracle when you say they are more common than you thought.
A true miracle, by definition, is something that rarely happens or only happens once.
If we could access miracles they would no longer be miracles. Again by definition they are things we can not access.
The vast majority of what people call miracles are just random events.
You are walking on a roadside and suddenly a huge bug pops up causing you to jump just as a car comes speeding out of nowhere. Its not a miracle just good fortune, probably not so much for the bug.
Things happen for no reason we get lucky, or someone else gets unlucky, and we think it is somehow caused by forces unknown.