Etrade options trading requirements to become a police
Traders need to ask questions of their investing aims and risk appetite and then learn what works for them. With no strategy or research, then any short term investment is going to win or lose based only on luck.
Conversely, a trader making a well researched trade will ensure they have done all they can to avoid relying on good fortune. So the answer to the question will come down to the trader.
Things like leverage and margin, news events, slippages and price re-quotes, etc can all affect a trade negatively.