For as little as £5 you can hire self proclaimed statistical data analysts/reports to look at your wins and losses or particular patterns. Some have paid programs where they input your data. It can be helpful seeing your system on a graph plus they analyse it and help weed out losses these guys have eyes for certain patterns. I would recommend spending at £30 if you are serious. You get what you pay for. Chat to them first.
link:://fiverr.com/