A lot of this stuff might well just be subconscious weirdness; some is trickery; some of it might well be demonic action; some of it might be a mixture of some or all of the above.
Don’t be surprised if some people have different experiences than you. Everybody’s brains work a little bit differently.
For example, I’m the kind of person who has “felt” God’s presence at times. Some people never do, even though they believe. Does this make them less Christian? Does this make me more Christian? No, of course not. We know God and learn about the world in the ways God has designed us.
So yeah, I never expect to see any ghosts or have psychic experiences, and I’m not really too unhappy about that.

Other people will have things happen which are hard to explain, but I’m not comfortable saying that none of it really happens. Certainly, the tradition of the Church and the teaching of Our Lord indicates that sometimes weird stuff does occur, and not all of it is nice.
So some people may be engaged in spiritual warfare in a more easily sensed way, whereas I just battle the demons by trying to do the right thing. But it doesn’t mean that either of us has an easier or harder time – just different.
Re: prophecy
Prophecy is a gift of God and comes from the Holy Spirit. You never would charge money for it, and you can’t call it up on purpose. Also, in Old Testament times, people who prophesied incorrectly faced severe consequences, as it showed that they were being presumptuous and lying about God talking to them…
But the Church prohibits divination, because that’s trying to wrench out knowledge of the future by force, instead of being happy if God tells you something in advance and equally happy if He doesn’t – or just using the logic in your noggin to figure out what’s likely to happen.
Prophecy is eating the food God gives you; any form of divination is trying to steal it.
There’s a lot of info out there on discernment of spirits and the Gifts of the Holy Spirit. Probably on this very site.