The news has been out since August 2018 that the European Securities and Management Agency (ESMA) has compelled all brokers (subject to its jurisdiciton) to reveal their statistics on the percentages of losing trader accounts. Search for article headed, "ESMA Regulations Reveal: Where CFDs Traders Lose the Most".
The reported percentage of losing accounts ranged between 63.7% and 86%, with an average of 76.3%.
For the avoidance of any misunderstanding, my reporting on these figures is not with the intention of promoting any broker or set of brokers.
I believe that it is in everybody's interests to access this important information to better understand the risks involved in 'financial trading' - and that I am within Tradingview's rules for reporting it.