It tells us where it "should" be going, sure it could be wrong, but that is the whole point of indicators, to tell us where it is going. Could it do minutes? Well if you take the candles very quick then it might, but usually for an hour or so, you will know where the direction should be, and what the market is thinking about.
Of course there are moments when it is wrong and that is why it is not a sure way of making money. If it was so guaranteed, we would all do it, use indicators, and make a profit non stop. But, because we know that it is not a guaranteed thing, we are not really seeing anything changing and sometimes it's being wrong.
Whether you analyze using indicators or price action, the goal is simply to improve your chances of making a profit and to provide a rationale for entering or exiting a trade. However, these methods aren’t always accurate, it depends on how you use them. Every trader may have a different approach to interpreting signals from these indicators. As far as i’m concerned, as long as the end result is a profit, it doesn’t matter how you use them, keep doing it. You may have already found the right method with a high probability of success.