Help me to understand stop loss

Hello, Sorry if this sounds newbie, I M still learning with lunch money and try to understand the basic. In particular, I want to understand how I can "detect" the danger of setting a stop loss that is skipped/sold to a much lower value. The (basic/stupid) idea is to take a bull expectation, set a max loss acceptable, buy a call with with auch greater capital and then set a stop loss to money invested - max loss. Theoretically if the the stop loss is filled immediately and without slippage the maximum loss is defined, while the upwards trend catch a much higher value due to the entire capital invested, instead of buying the call with only the max loss money. I know the risk associated with the stop loss, but my question is rather how do you assess these risk? What are the variables to look at to understand that the stop loss won't be met and in what degree? I take as an example a trade that I would have liked to do but at the end I didn't. On August 5th, Hertz was 1.5. 2C expiring on August 7th was 0.01 after a good news about revenue. Suppose I buy 10k USD worth with a stop loss of 7.5k USD, willing to lose 2.5k. At closing on August 7th the stock was valued 2.26, this means that exercising and selling at that price (or even a bit lower) would have generste 250k. So the idea was, risking 1k in the first hours of the trade (in case the stock goes down, since the call was already very cheap maybe someone would buy it back at discount) or if it runs catch a much greater rewards. Risking 2.5k to win 250k. So the entire point was, I want to challenge my assumption that I would fill easily that 2.5k, because it seems too good to be true. Please don't bash me, I'm not a degenerate, I didn't make the trade especially because I'm aware that if something appears to be too no brainier, probably I'm not understanding something. Thaanks!