I don't know how other people use the golden ratio, but I use it to measure the retracement and rebound points of a market.
It may be possible to measure the final target position, but I don't know how to do it, because there are not only 0.382 and 0.618, but also 1.382 and 1.618 and other Fibonacci extensions.
But at least for me, the application of measuring retracements and rebounds is often effective.