Flipping and leaving things down to chance is the easy way. In turn, sometimes you will win, sometimes you will lose. Ultimately, 50/50 results in long term even events. Even wins, even losses. With casinos, this goes down as low as 35%/65%. In online casinos, it's generally 45%/55% or sometimes as low as 49.5%/50.5%. The result? Long term losses.
Day trading involves a lot more than just chance. It requires following principals and skill to improve the success rate. You are also competing with and against many people in many markets, not against a casino software built to always have better odds of winning than you do.
I totally get your point about the certainty of the 50/50 coin flip and the skewed odds in casinos or online platforms. Yes, day trading does require adherence to principles, a honed skill set, and a comprehensive understanding of the market dynamics. However, despite all the skills and principles, the market has its way of throwing curveballs. Considering the statistic that over the last 20 years, less than 10% of U.S. actively managed funds have outperformed the market, the odds seem grim. In day trading, you're pitted not just against a system designed for you to lose, but against global events, algorithmic trading, and massive financial institutions, making the playing field more uneven than it might initially appear. The complexity, the competition, and the unpredictability could make day trading feel like more of a gamble than a game of chance.