The short answer is lack of persistence with a well tested and rounded strategy. The success rate of 1% sync with success rate in most other fields. Not many are wired to persist in the face of inevitable failures they will find along the path to success.
I am mostly a trend follower. Markets trend only 30-35% of the time globally. I make most of my profits when the market trends. So I don’t look for monthly positivity. I look in yearly time frame. I post my yearly returns here and on my website.