If the 6 realms are states of the mind, are Buddhas / Siddhas miracles real?

**Hello,** I understand that the six realms can be interpreted as states of the mind. But at the same time I believe in Yidam yoga, not only as symbolic but as a real emanation too - I have devotion. If the six realms are only symbolic then Buddhas / Siddhas cannot surpass the three times and cannot preform any miracles also; as I think they are both superstitions, so may be rebirth. At the same time nirvana may not be reachable by mantras as only a 8th level Bodhisattva can compose a mantra; and a lower level Bodhisattva in the 1st step is able see 100 lives before and after. I do believe in miracles, karma, nirvana, rebirth and "spirits" because of my experiences in life. I might be wrong, but shouldn't this make sense ? I mean Buddhism is very logical... What is considered a superstition from a Buddhist point of view ? **Thank you !**