Whether you can make money in the long term depends on two things: your winning probability and the magnitude of your wins and losses.
These two combined form the true core of trading - expected value.
The calculation of expected value is very simple:
"Winning Rate × Profit Magnitude" minus "Loss Probability × Loss Magnitude".
Looking only at the winning rate is incomplete because the amount of money won or lost is the key to the final profit and loss.
Therefore, having a high winning rate alone is meaningless.
Even if you win nine times and lose once, as long as that one loss is large enough, all the small wins before will be wiped out in one go