What is tricky about it is that all variables or factors do not stay constant; they change over time. Delta itself is the measurement of how much the option price changes according to 1 more unit of price change in its underlying and yet over time, delta itself changes. According to the pricing model, delta is supposed to change according to gamma which is the measurement of the change in delta according to one more unit of price change in the underlying but yet gamma itself changes too. So at the end, there is no way to calculate and predict what the future value of the option price is going to be. All of the pricing models like the Black & Scholes model all work with static pricing variables that they stay the same over time which is not true irl which renders these pricing models not useful. They serve at best as a teaching tool to help people understand the basic concept of what determines the price of an option but in reality, nobody knows.
This sums it up but.... What?! You giving up on options Dest? Is that the the secret sauce nowadays? Be right on direction, options be damned?
It's not the strategies that are wrong or bad (although some are aimed at retail but really only for pros and market makers, like ratios for the most part). It's the process, it's the recognition of proper risk gauges and knowing when NOT to trade. I've found with my students that it isn't that the can't make some money, it's that they gave back all of it and more.