I don't like this word 'Gamble' but you can say it. Gambling is something you put your money in it without having any knowledge or experience. Traders spend a lot of time in demo account trading, spend countless sleepless nights in gaining knowledge about the art. So, calling it gamble may hurt their feelings.
So amazing personality do you have! Great, mate! Just keep it up! But I really appreciate the traders who spend enough sessions in their demo before the live.