All pros use fib,is one of the most important issues in markets,the only problem is that you should know how to use them and i dont know if there are any --teachers --gifted enough around to help you, you are on your own in this.In 5 trillion daily market even 100 millions are not impressive. Also take into account that
1. Around half of the market is long and the other half is short, and fibos for those will be different by level and trades in opposite direction
2. People draw fibo levels differently by choosing different extreme points on the chart
As a result there will be lots of different levels that are used by small part of market participants (say maximum 5 %) and may be in a different time. Impact of these trades will be very unconcentrated and mainly balanced.
Probably only those levels that enjoy significant consensus among traders will be really important. But the question is how to differentiate those ones from the others.
Its ridiculous for someone to claim that fibs dont work.
Of course its man made if it was nature gifted like ellioticians claim it wouldht work.