How much do you need to make $100 a day trading?

Could you elaborate on the amount of capital required to consistently generate a daily profit of $100 through cryptocurrency trading? Factors such as market volatility, trading strategy, and risk management play crucial roles in determining profitability. Additionally, how does one go about estimating the necessary capital for such a goal, considering the unpredictable nature of the cryptocurrency market? Is there a general rule of thumb or formula that traders use to calculate their potential daily earnings?