You must try it on your charts to understand where will the market be heading, because knowing major levels of support and resistance will literally help you out in finding out whether a correction is near or the market is going to take a rebound. And keep note of things side by side as to what's happening outside markets but relates to the crypto you're invested in, so that will also help you predict it in a much better way.
From my experience with Fibonacci retracement , it is not a trend finder. Fibonacci is just like any other indicator that can be overwhelmed by market rush. Fibonacci is an indicator that you can set to your taste of trading strategy so I consider it as an indicator that can be manipulated or lagging behind the market price. I used it but it is not a trend finder, just one of the indicators that the market volatility will easily beat the set to confuse you.